Enhancement request - Option to add additional model folders

[Brennok]

Currently due to not enough space on my local PC, I started downloading models onto my NAS and manually move them to the PC as needed. Since I don't want these models showing up in Forge due to loading time over the network, I don't have them connected to my main checkpoint folder via symlinks.

It would be helpful if we had the option to add additional folders for models so that these models could also show as installed. These are all mapped network drives.