refactor: split QtDriver into View and Controller to follow MVC model

[Computerdores]

Summary

Splits the View aspects out of QtDriver into the existing Main Window class so that only the Control aspects remain. This will reduce the size of ts_qt.py and should generally make the code more maintainable.

Note: This is based off of #933 as that PR also modifies ts_qt.py and merging afterwards would be a pain. (which also means that atm the #933 commits show up in this PR as well)

Tasks Completed

• Platforms Tested:
  • [ ] Windows x86
  • [ ] Windows ARM
  • [ ] macOS x86
  • [ ] macOS ARM
  • [ ] Linux x86
  • [ ] Linux ARM
• Tested For:
  • [ ] Basic functionality
  • [ ] PyInstaller executable