New stuff 😎

Changelog:

• Fix "Gray screen" issue;
• Fix incorrect mouse movements;
• Working scroll in UI and on a streaming PC (just scroll with two fingers);
• Add combo for Guide button (default is Minus+Plus);
• Customizable button mapping and combo keys for each game;
• Allow to close current game, also allow to run game when another game already running;
• Lots of UI fixes and improvements.