Merge pull request 'OzG-6510 VorgangManager: file.proto aufräumen' (#499) from OzG-6510-file.proto-aufraeumen into master

Reviewed-on: https://git.ozg-sh.de/ozgcloud-app/vorgang-manager/pulls/499


Reviewed-by: OZGCloud <ozgcloud@mgm-tp.com>