* ppvehicle add customized docs, test=document_fix

* fix pipeline readme.md test=document_fix

* fix pipeline readme.md link test=document_fix

* add licensed to lane_to_mask.py

* ppvehicle_violation.md add args list test=document_fix

* add break in counting for pphuman

* fix break in doc and codes

* fix mot break in region, test=document_fix

* fix region_polygon and region_type, test=document_fix

* add tools for get_video_info, test=document_fix