[Feature enhancement] Allowing base game files in file addition config.json files

[Phlipsy]

Hi there.

A problem I'm facing right now is that some single slot c00 mods depend on files of the base game.
For example this one is supposed to overwrite Bowser Jr on slot c00 and uses the model.numatb but doesn't come with it. Changing every file in the mod to c01 for example won't work because it needs the model.numatb of slot c00.

So I'd like to propose the idea to simply add a config file like

"new-dir-files": {
        "fighter/koopajr/c01": [
	    "fighter/koopajr/c00/model.numatb"
        ]
}

or whatever the correct internal filepath is (I'm not too sure), to copy the required file over. This would need to happen before the file gets overwritten by a c00 mod.
Otherwise I'd have to copy the file myself from my own extracted game copy every time an issue like that occurs which won't work for the project I'm currently working on.

Is this in any way possible? I'd love to hear your opinion on it.