* refactor ext op and add matched rbox iou

* replace rbox_iou_ops with ext_op

* remove hardnet39

* remove hardnet39

* [Dy2St]Fix cascade_rcnn export model problem (#6468)

* [Dy2St]Fix cascade_rcnn export model problem

* [Dy2St]Fix cascade_rcnn export model problem

* fix import for mot

* fix import for mot deploy

* fix lazy import mot

* [Dy2St]Fix cascade_rcnn export model problem

* [Dy2St]Fix cascade_rcnn export model problem

* add cascade vitdet

* cascade vit

* fix for model export

* add vit cascade cfgs

cast dtype in load_pretrain_weight

* add ocsort tracker

* add ocsort deploy

* merge develop

* fix ocsort tracker codes

* fix doc, test=document_fix

* fix doc, test=document_fix

* add stage_loss_weights

* add reg_class_agnostic

* add loss_rpn_bbox

* Add SIoU and MobileOne block

* add paddle copyright

* mobileone block k>1 bugfix

* format code style

* fix ShuffleNetV2 x2_0 stage_out_channels

* fix format, test=document_fix

* add convnext crn yolox

* update readme doc

* fix yolox readme params flops, test=document_fix

* upgrade adawm to adawmdl for transoformer

* rename arg

* add convnext

* remove invalid args

* add vit, adamw_ld

* update

* support eager all_reducer return value

* revert file

* fix error logic

* support simota head in eager

* clean fluid

* mv static to legacy

* remove yolo box

* revert legacy dir

* revert static link

* update in_dynamic_mode

* clean iou_similarity, collect_fpn_proposals, bipartite_match

* add exclude_nms and trt silu for yolox

* fix silu act, fix readme

* fix class init when import ppdet files