Add YOLOv5-cls Model (#335)

* add yolov5cls

* fixed bugs

* fixed bugs

* fixed preprocess bug

* add yolov5cls readme

* deal with comments

* Add YOLOv5Cls Note

* add yolov5cls test

Co-authored-by: Jason <jiangjiajun@baidu.com>

fastdeploy/vision/classification/contrib/yolov5cls_pybind.cc

@@ -0,0 +1,32 @@
+// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+#include "fastdeploy/pybind/main.h"
+
+namespace fastdeploy {
+void BindYOLOv5Cls(pybind11::module& m) {
+  pybind11::class_<vision::classification::YOLOv5Cls, FastDeployModel>(
+      m, "YOLOv5Cls")
+      .def(pybind11::init<std::string, std::string, RuntimeOption,
+                          ModelFormat>())
+      .def("predict",
+           [](vision::classification::YOLOv5Cls& self, pybind11::array& data,
+              int topk = 1) {
+             auto mat = PyArrayToCvMat(data);
+             vision::ClassifyResult res;
+             self.Predict(&mat, &res, topk);
+             return res;
+           })
+      .def_readwrite("size", &vision::classification::YOLOv5Cls::size);
+}
+}  // namespace fastdeploy