add new docs

.new_docs/api_docs/cpp/README.md

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+# Python API
+
+This directory help to generate C++ API documents for FastDeploy.
+
+In this directory, execute the following command, 
+
+```
+sudo apt-get install doxygen
+
+doxygen
+```
+
+After execution, use browsers open `docs/html/index.html`

.new_docs/api_docs/cpp/docs/.gitignore

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+html
+latex

.new_docs/api_docs/cpp/main_page.md

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+# FastDeploy C++ API Summary
+
+## Runtime
+
+FastDeploy Runtime can be used as an inference engine with the same code, we can deploy Paddle/ONNX model on different device by different backends.  
+Currently, FastDeploy supported backends listed as below,
+
+| Backend | Hardware | Support Model Format | Platform |
+| :------ | :------- | :------------------- | :------- |
+| Paddle Inference | CPU/Nvidia GPU | Paddle | Windows(x64)/Linux(x64) |
+| ONNX Runtime | CPU/Nvidia GPU | Paddle/ONNX | Windows(x64)/Linux(x64/aarch64)/Mac(x86/arm64) |
+| TensorRT | Nvidia GPU | Paddle/ONNX | Windows(x64)/Linux(x64)/Jetson |
+| OpenVINO | CPU | Paddle/ONNX | Windows(x64)/Linux(x64)/Mac(x86) |
+
+### Example code
+- [Python examples](./)
+- [C++ examples](./)
+
+### Related APIs
+- [RuntimeOption](./structfastdeploy_1_1RuntimeOption.html)
+- [Runtime](./structfastdeploy_1_1Runtime.html)
+
+## Vision Models
+
+| Task | Model | API | Example |
+| :---- | :---- | :---- | :----- |
+| object detection | PaddleDetection/PPYOLOE | [fastdeploy::vision::detection::PPYOLOE](./classfastdeploy_1_1vision_1_1detection_1_1PPYOLOE.html) | [C++](./)/[Python](./) |

.new_docs/api_docs/python/Makefile

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+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line, and also
+# from the environment for the first two.
+SPHINXOPTS    ?=
+SPHINXBUILD   ?= sphinx-build
+SOURCEDIR     = .
+BUILDDIR      = _build
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

.new_docs/api_docs/python/README.md

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+# Python API
+
+This directory help to generate Python API documents for FastDeploy.
+
+1. First, to generate the latest api documents, you need to install the latest FastDeploy, refer [build and install](en/build_and_install) to build FastDeploy python wheel package with the latest code.  
+2. After installed FastDeploy in your python environment, there are some dependencies need to install, execute command `pip install -r requirements.txt` in this directory  
+3. Execute command `make html` to generate API documents
+
+After all the step done, use browser open `_build/html/index.html`.

.new_docs/api_docs/python/conf.py

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+# Configuration file for the Sphinx documentation builder.
+#
+# This file only contains a selection of the most common options. For a full
+# list see the documentation:
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
+
+# -- Path setup --------------------------------------------------------------
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#
+# import os
+# import sys
+# sys.path.insert(0, os.path.abspath('../python'))
+from recommonmark.transform import AutoStructify
+from recommonmark.parser import CommonMarkParser
+
+# -- Project information -----------------------------------------------------
+
+project = 'FastDeploy Python API'
+copyright = '2022, PaddlePaddle'
+author = 'PaddlePaddle'
+
+
+# The full version, including alpha/beta/rc tags
+release = "latest"
+# -- General configuration ---------------------------------------------------
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = [
+    'sphinx.ext.napoleon',
+    'myst_parser',
+    'sphinx.ext.autodoc',
+    'sphinx.ext.mathjax',
+    'sphinx_markdown_tables',
+    'sphinx.ext.viewcode'
+]
+
+autoclass_content = 'both'
+package_dir = {"": ["python"]}
+suppress_warnings = [ 'ref.myst']
+# Add any paths that contain templates here, relative to this directory.
+templates_path = ['_templates']
+# The suffix(es) of source filenames.
+# You can specify multiple suffix as a list of string:
+#
+source_parsers = {'.md': CommonMarkParser}
+# two wr style: reStructuredText/MarkDown
+source_suffix = ['.rst', '.md']
+# The master toctree document.
+master_doc = 'index'
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#
+# This is also used if you do content translation via gettext catalogs.
+# Usually you set "language" from the command line for these cases.
+language = "en"
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This pattern also affects html_static_path and html_extra_path.
+exclude_patterns = []
+# -- Options for HTML output -------------------------------------------------
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+#
+html_theme = 'furo'
+
+# -- Extension configuration -------------------------------------------------
+def setup(app):
+    app.add_config_value('recommonmark_config', {
+        'enable_eval_rst': True,
+        'enable_auto_toc_tree': False,
+    }, True)
+    app.add_transform(AutoStructify)

.new_docs/api_docs/python/image_classification.md

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+# Image Classification API
+
+## fastdeploy.vision.classification.PaddleClasModel
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.classification.PaddleClasModel
+    :members:
+    :inherited-members:
+```

.new_docs/api_docs/python/index.rst

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+FastDeploy
+=======================================
+
+* GitHub Repository:  https://github.com/PaddlePaddle/FastDeploy
+
+* Issue Feedback: http://www.github.com/PaddlePaddle/FastDeploy/issues
+
+* Contact Us: fastdeploy@baidu.com
+
+..  toctree::
+    :caption: 文档目录
+    :maxdepth: 2
+    :titlesonly:
+
+    object_detection.md
+    ocr.md
+    semantic_segmentation.md
+    image_classification.md
+    keypoint_detection.md
+    matting.md

.new_docs/api_docs/python/keypoint_detection.md

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+# Keypoint Detection API
+
+comming soon...

.new_docs/api_docs/python/make.bat

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+@ECHO OFF
+
+pushd %~dp0
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+	set SPHINXBUILD=sphinx-build
+)
+set SOURCEDIR=.
+set BUILDDIR=_build
+
+if "%1" == "" goto help
+
+%SPHINXBUILD% >NUL 2>NUL
+if errorlevel 9009 (
+	echo.
+	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
+	echo.installed, then set the SPHINXBUILD environment variable to point
+	echo.to the full path of the 'sphinx-build' executable. Alternatively you
+	echo.may add the Sphinx directory to PATH.
+	echo.
+	echo.If you don't have Sphinx installed, grab it from
+	echo.http://sphinx-doc.org/
+	exit /b 1
+)
+
+%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+goto end
+
+:help
+%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+
+:end
+popd

.new_docs/api_docs/python/matting.md

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+# Matting API
+
+comming soon...

.new_docs/api_docs/python/object_detection.md

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+# Object Detection API
+
+## fastdeploy.vision.detection.PPYOLOE
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.detection.PPYOLOE
+    :members:
+    :inherited-members:
+```
+
+## fastdeploy.vision.detection.PPYOLO
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.detection.PPYOLO
+    :members:
+    :inherited-members:
+```
+
+## fastdeploy.vision.detection.PPYOLOv2
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.detection.PPYOLOv2
+    :members:
+    :inherited-members:
+```
+
+## fastdeploy.vision.detection.PicoDet
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.detection.PicoDet
+    :members:
+    :inherited-members:
+```
+
+## fastdeploy.vision.detection.PaddleYOLOX
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.detection.PaddleYOLOX
+    :members:
+    :inherited-members:
+```
+
+## fastdeploy.vision.detection.YOLOv3
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.detection.PaddleYOLOX
+    :members:
+    :inherited-members:
+```
+
+## fastdeploy.vision.detection.FasterRCNN
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.detection.FasterRCNN
+    :members:
+    :inherited-members:
+```
+
+## fastdeploy.vision.detection.MaskRCNN
+
+```{eval-rst}
+.. autoclass:: fastdeploy.vision.detection.MaskRCNN
+    :members:
+    :inherited-members:
+```

.new_docs/api_docs/python/ocr.md

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+# OCR API
+
+comming soon...

.new_docs/api_docs/python/requirements.txt

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+sphinx
+recommonmark
+sphinx_markdown_tables
+sphinx_rtd_theme
+furo

.new_docs/api_docs/python/semantic_segmentation.md

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+# Semantic Segmentation API
+
+comming soon...