Feat(REST API): add url to (un)archive cards

[xyjonas]

• Resolves: #6132
• Target version: main

Summary

I implemented two new routes /api/v{apiVersion}/boards/{boardId}/stacks/{stackId}/cards/{cardId}/archive & /api/v{apiVersion}/boards/{boardId}/stacks/{stackId}/cards/{cardId}/unarchive, that will archive/unarchive cards via cardService. Documentation and unit tests are also included. Please review my work and let me know what you think.

Checklist

• [x] Code is properly formatted
• [x] Sign-off message is added to all commits
• [x] Tests (unit, integration, api and/or acceptance) are included
• [x] Documentation (manuals or wiki) has been updated or is not required

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[luka-nextcloud]

@juliushaertl The PR looks good to me, can we merge it?