Requested settings/features

Hey folks!

Added a few changes QoL changes to the game:

• Settings got
  • Crosshair customization options
  • Mouse sensitivity options
• Balanced the shooting recoil between aiming and non-aiming state
• Targets are only visible when aiming
• Pressing Tab switches between auto and semi-auto
• Minor UI animations
• Crosshair animation based on recoil

Currently the settings are not permanent between game launches which is pretty annoying. Will fix that for the next update.

Try it out and give some feedback!