Fixed many issues

Fixed issue with GUIs always having italics
Added settings for each individual GUI
Made GUIs.yml exist
Added OT setting

What's Changed

• OT Requirements by @HackuJacku in #24
• Rank rewards back button fix by @HackuJacku in #28

New Contributors

• @HackuJacku made their first contribution in #24

Full Changelog: 3.0.1...3.0.2