Ability to load/save/share projects from gists

[blurymind]

Github has a nice and simple rest api that allows r/w access to specified gist files on github. These are tiny code snippet files that are ideal for storing simple games.

This would encourage people to make more than demos and share with friends.

I implemented that in several of my hobby apps and it is pretty simple to do:
https://github.com/blurymind/tilemap-editor
https://github.com/blurymind/YarnClassic

Can do a pr if theres interest