Remove AntTweakBar and replace it with a new interface

[MichaelMoroz]

AntTweakBar is quite old and poorly supported on MacOS so to simplify building MMCE it would be best to remove it. I've already made a new interface module, but it would still require to add the necessary blocks to replace ATB functionality completely.
The classes needed are:

• Variable editor for int and float
• Drop-down list
• Check-box
• Text input, aka std::string editor
• Vector direction editor(maybe)
• Color editor(maybe)