Blue Arcade

- Replaced old setup wizard with complete command based setup system using /baa (BlueArcade Admin). Legacy setup wizard will be removed in future versions.
- Added comprehensive admin command suite. Some of the new commands include:

1. Arena management: create, delete, enable, disable, list, info
2. Arena configuration: setlobby, setname, setmode, setrounds, minplayers, maxplayers
3. Game management: add, remove, list, enable, disable
4. Game configuration: bounds, spawn, time, deathblock, finishline, floor, and game specific settings
5. Utilities: stick, pos1, pos2, clearselection, goto, teleport, reload
6. Arena control: forcestart and forcestop commands to manually start or stop arenas

- Arenas can now be easily configured as standalone or party mode via commands instead of manually editing data files.
- Added JSON caching system for data files improving performance and reducing disk I/O.

NOTES:
- The setup wizard has been marked as deprecated and will be removed in a future version.
- Arenas created with the new command system cannot be modified using the legacy setup wizard.
- These changes are necessary to achieve plugin modularity. (https://trello.com/c/k6Fp9xnG/39-make-the-plugin-completely-modular)