[IMP] Add bulk subscribe actions for auditlog rules

[drkpkg]

• Add server actions to trigger subscribe/unsubscribe from list view
• Ensure return type suits server action flow
• Support bulk handling without interfering with form buttons

[drkpkg]

@StefanRijnhart after the rebase from #3432 this feature is the only left. This bulk feature is useful when you have a large number of rules to subscribe or unsubscribe.

Note: #3437 is discarded after the rebase from #3432.