RPA checks + scripts.rpa handling

[ThePotatoGuy]

Changes

• Re-added splash RPA check
• added override to skip loading init code for script-poemgame
  • this was done by hooking into a spot between where early scripts are loaded and init scripts are loaded and removing the AST nodes for script-poemgame from renpy.game.script.initcode so it doesnt load later. (see override function comment for more info)
• updated CI so it doesnt delete scripts.rpa anymore

Testing

loading with no rpas

1. remove the DDLC rpas from the folder
2. launch the mod
3. verify the game shows the missing archives error

loading with scripts.rpa

1. Add the DDLC rpas (including scripts.rpa)
2. launch the mod
3. verify the game launches / no crashes from scripts.rpa