* the methods inside it renamed to fit with class name
* cache folder changed into playerdata
- Renamed LimboPlayer to PlayerData
- Added fly speed to PlayerData
- Removed player's name from PlayerData object
- Added getPlayerLocationOrSpawn method in spawn loader.
- Create class to handle the creation of "LimboPlayer tasks" (adds encapsulation, reduces duplication)
- Move group setting into its own class because (mutual dependency between LimboCache and PermissionsManager otherwise)
