Added hunting tool

Adding of a new tool reserved for users with an account on the site.

This tool allows you to create your own hunt tracker whether it's for S Rank, A Rank or Fates  and thus know the respawn time.

Trackers are private and cannot be seen by other users until you allow them to. You can create a maximum of one tracker per user, but you have no limit to join another user's tracker (as long as they accept your request).

For more information, you can go to the "Hunt" section of the "Hunt Tracker" site.