Allow forge mod installation on neoforge launcher

[Communified]

I'd like to use neoforge as my launcher, and I also want neoforge mods to be installed when available, as they're optimized for neoforge specifically. That being said, neoforge is designed with forge compatibility in mind, so when you're installing content into a neoforge installation, even if a neoforge version of that specific mod isn't available for the specified version, if there's a forge version available, the mod should still be able to be installed and show up, with the forge counterpart. This would make the library much larger, and there wouldn't be compatibility issues given that neoforge was built upon forge's backbone.