* support rcnn bs=2 in cpp infer

* check dynamic shape in padbatch

* replace fluid by paddle

* fix time display in pptracking cpp

* fix timer in bs=2

* add mtmct aic_vehicle baseline

* fix clip_bbox, add coco model filter, fix some bugs

* fix infer bugs, fix crops and mtmct vis

* fix engine tracker infer

* fix mtmct images deploy

* fix readme and cfg

* remove mtmct of cfg modeling and tracker

* fix doc cfg

* add draw_center_traj

* add flow_statistic for mot_jde

* raise NotImplementedError when multi-class entrance counting is chosen

* revert * 'mp4v' to *'mp4v'

* add python deploy for pptracking

* fix plot tracking classes

* fix picodet deepsort

* fix format

* rename to det_infer

* add general yolov3 for deepsort

* refine format

* fix no target infer

* fix readme and conflict

* add deepsort export model, reid infer

* fix jde_yolov3 metric

* fix deepsort deploy

* fix doc, clean code

* add mot deploy infer image, add run_benchmark

* add mot keypoint unite python infer

* fix mot pose fps

* refine keypoint deploy

* fit video infer

* fix post process

* update comments for keypoint_batch_size

add dark deploy supported, mpii deploy supported;

* add mot score to txt results

* fix mot install typo

* add epoch for deepsort

* fix paddle no_grad

* deploy infer save image txt

* support xpu inference

* Automatically set use_dynamic_shape

* bs>1 for YOLO

* update det infer benchmark log

* add inference benchmark