refactored cv::CamShift and cv::meanShift
fixed cv::multuply, cv::divide
Merge pull request #2035 from ilya-lavrenov:tapi_CamShift
Merge pull request #2041 from ilya-lavrenov:tapi_mul_div
added cv::normalize to T-API; implemented missed UMat::copyTo with mask
Merge pull request #2033 from ilya-lavrenov:tapi_normalize