[Model] Support Paddle3D PETR v2 model (#1863)

* Support PETR v2

* make petrv2 precision equal with the origin repo

* delete extra func

* modify review problem

* delete visualize

* Update README_CN.md

* Update README.md

* Update README_CN.md

* fix build problem

* delete external variable and function

---------

Co-authored-by: DefTruth <31974251+DefTruth@users.noreply.github.com>

examples/vision/perception/paddle3d/petr/python/README_CN.md

@@ -0,0 +1,65 @@
+[English](README.md) | 简体中文
+
+# Petr Python 部署示例
+
+在部署前，需确认以下两个步骤
+
+- 1. 软硬件环境满足要求，参考[FastDeploy环境要求](../../../../../docs/cn/build_and_install/download_prebuilt_libraries.md)  
+- 2. FastDeploy Python whl 包安装，参考[FastDeploy Python安装](../../../../../docs/cn/build_and_install/download_prebuilt_libraries.md)
+
+本目录下提供 `infer.py` 快速完成 Petr 在 CPU/GPU上部署的示例。执行如下脚本即可完成
+
+```bash
+#下载部署示例代码
+git clone https://github.com/PaddlePaddle/FastDeploy.git
+cd examples/vision/vision/paddle3d/petr/python
+
+wget https://bj.bcebos.com/fastdeploy/models/petr.tar.gz
+tar -xf petr.tar.gz
+wget https://bj.bcebos.com/fastdeploy/models/petr_test.png
+
+# CPU推理
+python infer.py --model petr --image petr_test.png --device cpu
+# GPU推理
+python infer.py --model petr --image petr_test.png --device gpu
+```
+
+
+## Petr Python接口
+
+```python
+fastdeploy.vision.perception.Petr(model_file, params_file, config_file, runtime_option=None, model_format=ModelFormat.PADDLE)
+```
+
+Petr模型加载和初始化。
+
+**参数**
+> * **model_file**(str): 模型文件路径
+> * **params_file**(str): 参数文件路径
+> * **config_file**(str): 配置文件路径
+> * **runtime_option**(RuntimeOption): 后端推理配置，默认为None，即采用默认配置
+> * **model_format**(ModelFormat): 模型格式，默认为Paddle格式
+
+### predict 函数
+
+> ```python
+> Petr.predict(image_data)
+> ```
+>
+> 模型预测结口，输入图像直接输出检测结果。
+>
+> **参数**
+>
+> > * **image_data**(np.ndarray): 输入数据，注意需为HWC，BGR格式
+
+> **返回**
+>
+> > 返回`fastdeploy.vision.PerceptionResult`结构体，结构体说明参考文档[视觉模型预测结果](../../../../../docs/api/vision_results/)
+
+
+## 其它文档
+
+- [Petr 模型介绍](..)
+- [Petr C++部署](../cpp)
+- [模型预测结果说明](../../../../../docs/api/vision_results/)
+- [如何切换模型推理后端引擎](../../../../../docs/cn/faq/how_to_change_backend.md)