warcube protection core

WarCube Protection Core — Update

Added a new centralized spawn system for WarCube.

NEW
- Added /spawn command for players.
- Added an admin command to define the WarCube spawn point.
- Spawn position, dimension and player orientation are now saved persistently.
- /spawn can return players to the FOB from anywhere on the map.
- Added a teleport delay to prevent /spawn from being used as an instant escape during combat.
- Teleportation is cancelled if the player moves or takes damage.
- Player respawn now correctly uses the WarCube spawn when required.
- New players are correctly handled by the WarCube spawn system.

INTEGRATION
- The WarCube spawn is now managed as a centralized server-side system.
- Improved compatibility with the existing WarCube protection and world systems.

FIXES
- Fixed /spawn not returning players to the intended FOB spawn.
- Improved spawn persistence across server restarts.
- Added safe handling when no WarCube spawn has been configured.

This update is part of the preparation for the WarCube public beta.