[FEATURE] add option for deploy to git stage renamed files

[JoernBerkefeld]

needs to git-stage:

• deploy: added files
• deploy: updated files
• delete: removed files
• refresh: updated files
• fixKeys: removed and added files (which is then turned into "renamed" by git)
• schedule/execute/pause: updated files
• updateNotification: updated files

all of the above should return a list of keys per BU & type. That list can then be iterated over and ran through getFilesToCommit