Update 0.5.0

This Update features a first Enemy AI some UI Changes and a Map addition.

New:

• AI Enemys with Firearms
• Small Map Addition.

Changed:

• UI Overhaul

Bugs:

• BUG: Save System doesnt work properly
• BUG: Navigation System deactivated due to Bugs
• BUG: Weapon tooltip shows "Press USE" instead of "Press 'E'"
• BUG: Render-Texture Scopes make Enemy AI's weapon disappear
• BUG: Spawn height causes Player Damage at spawn