Quake Weapons

- Added ammopickups & megahealth
- Shooting weapons is now aggroing monsters (config adjustable)
- Added a total ammo counter above the hotbar
- Improved rocket jumping capabilities (Squake required)
- Crafting ammo is now cheaper
- New quad damage model + texture
- Reworked powerup spawner. The more players are in an area, the more they spawn
- Visible camera knockback when shooting
- Reduced physical knockback when hitting targets
- Test kit command