MNT add annotation to several methods in computer vision functions#57

welli7ngton wants to merge 1 commit intobotcity-dev:mainbotcity-dev/botcity-framework-core-python:mainfrom

welli7ngton:mnt/add_type_annotation_computer_vision_functionswelli7ngton/botcity-framework-core-python:mnt/add_type_annotation_computer_vision_functionsCopy head branch name to clipboard