* readme改版初版

* new version of paddledetection readme

* 暂时忽视加上icon无法页内跳转的问题

* 增加总体结构表格；修复icon跳转问题；精简模型列表；模型库增加3D检测、PP-Sports

* 删除目录

* FIX ERRORS OF LINK

* 折叠特色模型部分的内容

* 优化传送门显示

* 模型库做合并；增加YOLOVISION活动；修复检测效果展示文字粗体问题

* 新增benchmark；新增几个模型

* 修改benchmark图片大小，保持字体一致；增加链接

* 补充icon

修改导出模型bash命令：
1.outut->output
2.增加路径configs/picodet/application/pedestrian_detection->configs/picodet/legacy_model/application/pedestrian_detection

* Export ONNX with TensorRT BatchNMS plugin enabled

* Update EXPORT_ONNX_MODEL.md

* update doc, test=document_fix

* update en doc, test=document_fix

* update link, test=document_fix

* Update wechat group invitation infor

* Update README_cn.md

* update empty features check (#6985)

* rtsp push stream in pipeline (#7000)

* add push stream

* update push stream docs

* update class name

* update PP-Vehicle docs and en docs (#7042)

* update PP-Vehicle docs and en docs

* add reid model in v2.5 modelzoo

* update more

* [cherry_pick] [ppyoloe-plus] add task reademe and base config, test=document_fix (#6722)

* add fall down detection industry case

* modify the name of fall down industry case

* Update README_cn.md

* fix recompute state

* fix  paddleyolo doc, test=document_fix

* fix paddleyolo doc, test=document_fix

* Update wechat group invitation info

* Update README_cn.md

* update ppvehicle en doc, test=document_fix

* refine vehicle doc, test=document_fix