[Other] Add detection, segmentation and OCR examples for Ascend deploy. (#983)

* Add Huawei Ascend NPU deploy through PaddleLite CANN

* Add NNAdapter interface for paddlelite

* Modify Huawei Ascend Cmake

* Update way for compiling Huawei Ascend NPU deployment

* remove UseLiteBackend in UseCANN

* Support compile python whlee

* Change names of nnadapter API

* Add nnadapter pybind and remove useless API

* Support Python deployment on Huawei Ascend NPU

* Add models suppor for ascend

* Add PPOCR rec reszie for ascend

* fix conflict for ascend

* Rename CANN to Ascend

* Rename CANN to Ascend

* Improve ascend

* fix ascend bug

* improve ascend docs

* improve ascend docs

* improve ascend docs

* Improve Ascend

* Improve Ascend

* Move ascend python demo

* Imporve ascend

* Improve ascend

* Improve ascend

* Improve ascend

* Improve ascend

* Imporve ascend

* Imporve ascend

* Improve ascend

* acc eval script

* acc eval

* remove acc_eval from branch huawei

* Add detection and segmentation examples for Ascend deployment

* Add detection and segmentation examples for Ascend deployment

* Add PPOCR example for ascend deploy

* Imporve paddle lite compiliation

* Add FlyCV doc

* Add FlyCV doc

* Add FlyCV doc

* Imporve Ascend docs

* Imporve Ascend docs

examples/vision/detection/yolov7/python/README.md

@@ -24,6 +24,8 @@ python infer_paddle_model.py --model yolov7_infer --image 000000014439.jpg --dev
 python infer_paddle_model.py --model yolov7_infer --image 000000014439.jpg --device gpu
 # 昆仑芯XPU推理
 python infer_paddle_model.py --model yolov7_infer --image 000000014439.jpg --device kunlunxin
+# 华为昇腾推理
+python infer_paddle_model.py --model yolov7_infer --image 000000014439.jpg --device ascend
 ```
 如果想要验证ONNX模型的推理，可以参考如下命令：
 ```bash

examples/vision/detection/yolov7/python/README_EN.md

@@ -24,6 +24,8 @@ python infer_paddle_model.py --model yolov7_infer --image 000000014439.jpg --dev
 python infer_paddle_model.py --model yolov7_infer --image 000000014439.jpg --device gpu
 # KunlunXin XPU
 python infer_paddle_model.py --model yolov7_infer --image 000000014439.jpg --device kunlunxin
+# Huawei Ascend
+python infer_paddle_model.py --model yolov7_infer --image 000000014439.jpg --device ascend
 ```
 If you want to test ONNX model:
 ```bash

examples/vision/detection/yolov7/python/infer_paddle_model.py

@@ -28,6 +28,9 @@ def build_option(args):
     if args.device.lower() == "kunlunxin":
         option.use_kunlunxin()
 
+    if args.device.lower() == "ascend":
+        option.use_ascend()
+
     return option