[nvJPEG] Integrate nvJPEG decoder (#1288)

* nvjpeg cmake

* add common decoder, nvjpeg decoder and add image name predict api

* ppclas support nvjpeg decoder

* remove useless comments

* image decoder support opencv

* nvjpeg decode fallback to opencv

* fdtensor add nbytes_allocated

* single image decode api

* fix bug

* add pybind

* ignore nvjpeg on jetson

* fix cmake in

* predict on fdmat

* remove image names predict api, add image decoder tutorial

* Update __init__.py

* fix pybind

tutorials/image_decoder/README.md

@@ -0,0 +1,16 @@
+English | [中文](README_CN.md)
+
+# Image Decoder
+
+Currently, we support below image decoder libs：
+- OpenCV
+- nvJPEG (Needs NVIDIA GPU, doesn't support Jetson)
+
+## Example
+
+- [C++ Example](cpp)
+- Python API(WIP)
+
+## nvJPEG vs. OpenCV performance benchmark
+
+Refer to: https://github.com/PaddlePaddle/FastDeploy/pull/1288#issuecomment-1427749772