b97ac126f8
Replaces `Space Image` drop-box with a file handler in order to support opening multiple sets of files at once and to allow users to add their own file handler to the Image editor space if desired. A new `Image_OT_open_images` operator is introduced that uses `Image_OT_open` internally. It groups files by different sequences and UDIMs and loads each group accordingly. Co-authored-by: Jesse Yurkovich <deadpin> Pull Request: https://projects.blender.org/blender/blender/pulls/117707