Added option to hide category from annotators, changed endpoints and services
Minor fixes, added annotation instance endpoint - untested
Changed colors of dummy tags
Changed colors of dummy tags to show different colors in the tag tree
Added documents and annotations to seeding
Seeding for an annotation tag instance
Moved Enums to Models project
Static method to seed dummy tags
Cleanup in seeding
Seeding bug fixes
Merge branch 'features/9342-backend-userservice' into 'dev' Re #9342
Created UserService, and added a registration mechanism for services.
See merge request aswi/aswi-2022/aswi20220x00!7
Changed formatting, added comments, database check
Fixed seeding
Added seeding, cleaned up code