Performances fixes & new FastFlags

This release fixes a performance issue with grayscale on WebKit (making the app seem like it was running at 20fps~) and brings new FastFlags (graphics, visual, UI, and utility)

Full Changelog: 0.5.1...0.5.3

🛡 VirusTotal GitHub Action analysis:

• AppleBlox-0.5.3_arm64.dmg
• AppleBlox-0.5.3_universal.dmg
• AppleBlox-0.5.3_x64.dmg