Steam Deck (and small screens) compatibility part. 2

Hello !

Here we are with the second part of the Steam Deck compatibility patch !

Feel free to report any bug/weird behavior/performance issue on the Steam Forum or on Discord ( https://discord.gg/c8aARey ).

Changelog:

• Main menu gamepad compatiblity
• Sandbox save list gamepad compatibility
• Challenges menu gamepad compatibility
• Disable user-select on mobile/deck
• Make icons bigger on small screens
• Improve various page layouts on small screens
• Update Credits
• Exclude useless files from Steam build
• Add official steam controller settings (built on Steam Deck) with following controlls:
  • Joystick to navigate into menus
  • "A" to accept
  • "B" / "X" to go back
  • Right trackpad to use mouse
  • R2 to do left mouse click behavior
  • L2 to do right mouse click behavior

You can check out the game roadmap at: https://bugs.dysnomia.studio/projects/alchemistry/roadmap

Have fun !