(Add) Allow staff to set individual history entries to immune

[Obi-Wana]

This is meant for some edge cases where a staff would want to protect a user from receiving a HnR warning on a specific history entry.

[what-the-diff[bot]]

PR Summary

• New feature added for torrent immunity toggle This update presents a new function that alters the immunity status of a user's torrent.
• Accessibility upgrade The 'toggleImmunity' function can now be reached through a PATCH request because of a new route.
• User interface enhancement A new column has been added to the user-torrents view to provide a button enabling the immunity status of torrent histories to be adjusted.
• Additional confirmation step implemented Immediate execution of the immunity toggle has been prevented by an extra prompt to make sure the user intends to perform the action.