feat: Fully permissions based links

[imorland]

[DavideIadeluca]

Some minor things that could be improved but are not blocking.

One issue which we need to resolve in any case are the down migrations. It seems like the visibility column is not added back, which will result in the Forum Frontend Crashing Column not found: 1054 Unknown column 'visibility' in 'where clause'.

Also, after downgrading and trying to purge the extension, a MigrationKeyMissing error will be raised. Both issues are most likely related.

[imorland]

Some minor things that could be improved but are not blocking.

One issue which we need to resolve in any case are the down migrations. It seems like the visibility column is not added back, which will result in the Forum Frontend Crashing Column not found: 1054 Unknown column 'visibility' in 'where clause'.

Also, after downgrading and trying to purge the extension, a MigrationKeyMissing error will be raised. Both issues are most likely related.

Running the migrations down after a downgrade is a scenario that is not supported in Flarum, if changes were made in the new version. To purge data in this way, the purge must be done from the current version for it to work correctly.

I identified a small issue with a migration from 2020, but no issues with the new migrations