Serene Seasons X Distant Horizons - Backport

This is a port of ItsThatNova's 1.21.1 Fabric Serene Seasons X Distant Horizons compatibility mod to 1.20.1 Forge. 

It is not a one to one port as I did not port over the commands that Nova added. If you would like to see these commands or have a bug to report (as I haven't been able to do long term testing with the port to ensure it functions like the original, although I see no reason it shouldn't), feel free to let me know in my Discord.