DevUpdate 5Oc21

Changes:

• Added extended intro cinematic
• Optimized loading in / out of menus
• Completely re-designed main menu settings
  • Added tabs
    • Graphics settings
      • Added V-Sync option
    • Gameplay settings
      • Difficulty setting (easy, tough, hardcore)
      • Mods tab
    • Scoreboard
      • Not functional yet
    • Achievements list
    • Saving & Loading
      • WIP
  • Smoother menu open animation
  • Controller navigation support
• Fixed misaligned button hitboxes on window resize