Add per file/folder priority and toggling

[AllMeatball]

I think it would be nice for users to be able to pick files out of certain mods.

Examples:

1. The user wants to pick and choose specific parts of a mod (e.g. mix and matching)

2. The user has two mods, one mod that included some asset the user didn't want to have that causes conflict. you only wanted the model so you can disable the conflicting script(s).

3. The user doesn't want to run a mods scripts. maybe the user is downloading to inspect it for malware or just don't trust it.

If this is considered a duplicate issue feel free to close it.