* move manager initialized_ flag to ppcls
* update dbdetector preprocess api
* declare processor op
* ppocr detector preprocessor support cvcuda
* move cvcuda op to class member
* ppcls use manager register api
* refactor det preprocessor init api
* add set preprocessor api
* add create processor macro
* new processor call api
* ppcls preprocessor init resize on cpu
* ppocr detector preprocessor set normalize api
* revert ppcls pybind
* remove dbdetector set preprocessor
* refine dbdetector preprocessor includes
* remove mean std in py constructor
* add comments
* update comment
* Update __init__.py
