Use correct exit function
Get networking working, even if it's a bit hacky
Move API into backends for standalone/platform, stub out standalone backend
Standalone.Init()
Get rid of LoadStandaloneGameAsync, roll diff into LoadGamePackageAsync
Make a StandaloneGameInstance in standalone
Remove all these file hacks so I'm forced to do something to fix them
Fix file hacks
Add missing sbox-standalone exe back to sln
We only need to copy core/scripts/soundmixers.txt as far as I know
Move gamecontrollerdb.txt into core/cfg/
Get rid of `IsCitizenEnabled` hack
Don't override window title with gameinfo name, apply it nice and early when making app dict