* 1. add md5sum check;
2. add illegal parking recognition.

* add config for illegal parking recognition

* car licenseplate skipframe&time counter vote (#6609)

* car licenseplate skipframe&time counter vote

* incase of no track

* update the method to get plate

* if illegal_parking_time is -1, do not update_object_info

* get model dir from cfg

* illegal parking visualize optimize
Co-authored-by: Nzhiboniu <31800336+zhiboniu@users.noreply.github.com>