[Streamer] Basic framework, YAML parser, ppyoloe demo and video decoder demo (#863)

* support trt installed in sys dir

* streamer init

* link elements and run

* create source bin

* add config

* restruct dirs

* set property

* link elements

* integrate perf

* add bbox parser

* parse yaml to string, video decoder

* use try pull for decoder and nits

* streamer ppyoloe cpp

* update readme

* video decoder cpp dir

* add cn readme

* update readme

* cmake nits

* refactor perf measurement

streamer/examples/ppyoloe/cpp/main.cc

@@ -0,0 +1,22 @@
+// 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 "fd_streamer.h"
+
+int main(int argc, char* argv[]) {
+  auto streamer = fastdeploy::streamer::FDStreamer();
+  streamer.Init("streamer_cfg.yml");
+  streamer.Run();
+  return 0;
+}