Large update with a plethora of new features and improvements!

Changelog
+ Added sounds for when abilities are triggered
+ Added bounding boxes for arenas, which will act as a boundary for where players can be as well as where arena functions will be functional
+ Added a community chest where players can easily share items in-game
+ Added commands to force start or end games

* Lobby and waiting room should now take rotation and pitch into account
* Shortened Siren ability cooldown by 5 seconds
* Added more checks to prevent accidental ability firing
* Arenas will now require the creation of a bounding box before opening
* Arenas that don't meet opening requirements will now automatically close upon plugin startup
* Prevented people from teleporting by other means before leaving the arena
* Minor readjustments to GUIs
* Players with vd.admin permission will now be notified upon joining the server if the config file is outdated
* Fixed an issue where spectators were not receiving the time limit bar when first joining the arena
* Fixed an issue where arena records in the arena info menu listed names all in one row, should now be in multiple rows
* Fixed a bug where the display for the custom shop toggle was showing the status of the normal shop
* Rare drop probability now depends on difficulty multiplier
* Nerfed ninja by removing armor while invisible
* Fixed issue where when all villagers die even though mobs are still spawning, the game doesn't end
* Adjusted poison arrow amount and price
* Arenas are now cleared upon plugin shutdown
* Changed Hoglins to Zoglins
* Fixed issue where the quick start would still trigger even if the final time was below 10 seconds
* Revamped custom shop creation for faster and more intuitive setup

- Chicken jockeys will no longer spawn