* 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

* compat dev & release

* fix ops import

* fix dy2static, use isinstance to avoid TensorArray transform (#6877)

* add gt as proposals for cascade
Co-authored-by: Nxiongkun <807377414@qq.com>

* multi_thread & multi_rtsp input (#6834)

* multi_thread & multi_rtsp input; test=document_fix

* update rtsp docs; test=document_fix

* update savename,add threadid to name;test=document_fix

* update pphuman&ppvehicle configs relative path

* add yoloseries doc, test=document_fix

* update yoloseries doc, test=document_fix

* Update wechat group invitation infor

* Update README_cn.md

* add flag loss_normalize_pos

* add faster vitdet

* update faster vitdet