* adds createMl reader & writer class
* adds getFormatMeta function to support more than two save_format
* adds CreateML read & write support
* adds format CreateML icon
* fixes negative height/width
* removes type hints
* fixes coordinate calculation
* adds unit test
* removes typehint
* Add previous bounding boxes code
* Create method to avoid repeated code
* Fix text in the action copyprevbounding
* Add description for different languages
