Implement player death and respawn mechanics and enhance mob combat
- Implement player death sequence including death camera, animation, and sound effects.
- Add player respawn logic to find and teleport to the nearest appropriate respawn area.
- Add delayed damage application to CrystalSanctuaryGuardian and LiveRock mobs with distance and angle checks.
- Add new audio assets for player damage grunts and death sound.
- Register new assets in process-assets.hpp.
- Fix missing timer cancellation in LiveRock destructor.
- Update gameplay.json with adjusted player stats.