Auto download host's mods on join

[Nebual]

Adds a new button to the 'Mod definition mismatch' window that appears when a guest joins a host with differing mods enabled: "Autosync Mod List". It will:

• Subscribe to any Workshop mods the host currently has active, waiting for their downloads/installs to complete
• Set the list of active mods to match the host's, including order. This is functionally equivalent to automating the copying of ModsConfig.xml

Caveats:

• it doesn't download non-workshop versions of mods. If they're installed out-of-band, this will still correctly activate them in ModsConfig.xml, so that's something!
• it'll display a console error if Workshop cannot be reached, such as for non-Steam installs, and proceed to try setting up ModsConfig. Missing mods are just ignored/not-set.

I expect this to personally save me 60+ minutes of handholding my friends through the manual sync process :D

[notfood]

Without config sharing, this option will only cause trouble to the average user. They'll expect for it to just work but in reality they'll just desync.

Some configs are local, others are multiplayer required. Perhaps some config panel where you select what config files are required. Then there is the issue with some mods not storing their config in the expected location (hugslib I'm looking at you)

[Deathlymad]

Would it maybe make sense to shift dealing with the configs in some complex way to the multiplayer API and assume a default? Also maybe have mods register a mirror that defaults to their steam workshop.

[notfood]

I'd like to make some UI for file blacklisting picked from the Mod.Settings()