Run as Long as You Can

### Added
- Added the Monster Handbook.
- Every player now receives their own Monster Handbook.
- Monster entries are tracked individually for each player.
- Monster status now changes from "Not Defeated" to "Defeated" after defeating a creature.
- Added detailed information for every custom monster:
  - HP
  - Threat Tier
  - Special Feature
- Rebalanced loot throughout the world for a more challenging survival experience.
- Added a chance that sleeping may fail, forcing players to survive the night.
- Improved overall handbook functionality and progression