* 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 mot jde api for pptracking

* add pptracking sde api infer

* fix timer in deploy

* fix mot_keypoint deploy

* update pptracking and mot doc, test=document_fix

* update docs, test=document_fix

* fix notes, test=document_fix

* fix label_list for mot, add warnings

* add result txt format, test=document_fix

* fix readme of mtmct, fix paddle.disable_static, test=document_fix

* remove paddle api

* fix mtmct deploy

* add enable_static

* 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

* clean mot readme modelzoo

* add pptracking link

* add draw_center_traj

* add implementment for FlowStatics

* rename count to entrance_count; rename count_set to id_set

* add a todo for entrance line setting

* rename count to do_entrance_counting

* convert print_save_file to the origin line

* visualize entrance line

* fix conflicts

* move entrance_line show in plot_track

* add flow_statistic for mot_jde

* raise NotImplementedError when multi-class entrance counting is chosen

* revert * 'mp4v' to *'mp4v'

* add python flow_statistic for sde

* update window timer for pptracking

* keep origin mp4v format

* 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