Changelog:
- Add new components: hitbox and hurtbox
- Update player and crates with hitbox and hurtbox
- Add printing of mempool stats
- FIX CRITICAL BUG: use entity idx when removing from component map
- Previously, it incorrectly uses the component idx
- Check for entity aliveness before removal and collision checks
- KWOWN ISSUE: Player can get stopped by metal crates when walking on
them