BC-11019 - refactor media board UCs

[hoeppner-dataport]

Description

• rename roomMembershipAuthorizable to roomAuthorizable
• rename RoomMembershipRule to RoomRule
• move role- and permission-composing logic that is in some private methods of UCs to according Authorizables (room-/roomMember-Authorizable/boardAuthorizable)
  • (at the moment it's partly in UCs and in board-node-permission-service (the later should get wegRefactort ;) )
• refactor media-related UCs that contain permission-checks to the board
  • media-available-line.uc.ts
  • media-board.uc.ts
  • media-element.uc.ts
  • media-line.uc.ts

Links to Tickets or other pull requests

BC-11019

Approval for review

• DEV: If api was changed - generate-client:server was executed in vue frontend and changes were tested and put in a PR with the same branch name.
• QA: In addition to review, the code has been manually tested (if manual testing is possible)
• All points were discussed with the ticket creator, support-team or product owner. The code upholds all quality guidelines from the PR-template.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
2 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
2.2% Duplication on New Code

See analysis details on SonarQube Cloud