Removal of our PWS repo and replacing it with PWS Custom Collection

Due to support seemingly being halted for hosting custom repos for PWS, we are dropping it as it is highly dysfunctional now

I have updated the setup guide here with new instructions on how to use it.

We still have Arma 3 Sync as another way to get the same mods and I will keep it up to date and update it every Friday along with our Custom Collection.