UIBuilder V2

[KYPremco]

After so many tries and tweeks, UIBuilder v2 is finished! at least for testing.

It still missing alot of presets, but it will grow with time.

Improved features of UIBuilder V2:

• Ability to make your own presets easily/special builders easily.
• Autocompletion within presets to use methods to your liking.
• StyleSheetBuilder, have all the power you want as if you were using UXML/USS.
  • Animations
  • Custom hover/active/enabled effects with any image, even custom ones
• When using the Stylesheet builder increased performance
• New presets that won't confuse you with many options

This MR also includes

• DependencyContainer
• Bottombar fixes