Allow force unlock of automated client locks

[juliusknorr]

This will make sure that lock owners can still unlock stale locks from clients that use the token type 2. We will show a confirmation dialog as revoking a lock could cause conflicts with file changes if the client comes back online assuming the lock would still be present.

Steps to test:

• Connect the desktop client to a nextcloud server with this branch and files_lock app enabled
• Sync an office document
• Open the file on the desktop (e.g. with libreoffice)
• The file shuld now be locked on the web UI
• Kill the desktop client so the lock is stale
• Try to unlock in the web

Replaces #172
Fix #325

• Needs a proper UI component for the confirmation dialog

UI changes

• Add hint if a client locked the file next to the user name (As the tooltip)

• Show confirmation modal when force unlocking another clients lock

[juliusknorr]

/backport to stable30

[juliusknorr]

/backport to stable29

[juliusknorr]

/backport to stable28

[juliusknorr]

/backport to stable27

[juliusknorr]

Will fix the conflict once I merged the remaining dependency updates on main

[max-nextcloud]

Had a look at the code. Did not test it though.

[MaxXor]

When can we see a release with this? 🙂