Crowd Source distribution of save locations

[DavidDeSimone]

Good recommendation from Discord is to allow the community to have a stream lined process to submit new save locations. My thoughts:

1. Have a button to upload your save location to a backend at opencloudsaves.com
2. From there, I can have a bot open a PR that I or other contributors can review

One issue with our gamedef manager is it's currently one giant json blob - that makes merging difficult. Another approach is a file per gamdef - which has some advantages, but also some downsides. I think I can work on this process without answering the question about changing the format of our gamedef map.