Remove the need to add a cmd line arg for run.gd

[ithinkandicode]

Atm there's a requirement with Brotato to launch the game with --script run.gd. Can we remove the need for the cmd line arg, and potentially for the run.gd file?

I'm not sure what it does/why it's needed so if anyone can illuminate me I'll be happy to discuss options and workarounds and potentially code a fix.

[Qubus0]

we can only have one of the two:

1. edit the source code wit the mod loader as autoload and recompile (best case scenario: the game developer does that)
2. use a command line flag for a script that injects the modloader as autoload before the game runs

what i'm currently working on will make both cases easier/more convenient to use. Though i'm not sure if that fulfil the conditions to 'solve' this

[ithinkandicode]

Resolved in #78