Supernova Empires 4

- Changed default difficulty to Hard
- Added a new texture for a shield
- Added a new enchantment for shield that will only be available through quests
- Fixed bugs on quests
- Added 3 new machines
- Added recipes for the new machines
- Added dirt as Silent Gear material
- Changed some stats for Fbmodium metals
- Fixed texture bug for all Nether Infused Fbmodium Silent Gear tools
- Fixed texture bug for all End Infused Fbmodium Silent Gear tools
- A few tweaks on game menus