Feature, Bug Fix and Windows Update

• Ability to long press a square to erase your input
• Added option to change the accent color
  • Available colors:
    • Cyan
    • Blue
    • Indigo
    • Violet
    • Purple
    • Pink
    • Red
    • Orange
    • Green
  • Unsolved squares color is set to Orange if accent color is Red
  • Default is Blue
• Version number in About window is now a hyperlink to the releases page of this project on GitHub
• Added proper support and released installer for Windows
  • Hides default Desktop Title Bar
  • AppBar (Sudoku Title Bar) can be used to drag the window
  • AppBar (Sudoku Title Bar) can be double-tapped to maximise or restore the window
• Set theme based on device theme on first run (Android, iOS and Web)
• Made native splashscreen dark and added app icon (Android, iOS and Web)
• Updated app name, description and name displayed in link previews
• Added screenshots to be displayed when installing as a PWA
• Fixed issue where game wouldn't end even after correctly solving it
• Fixed issue where game would have multiple solutions