ARM (and other) architecture builds for snap

[ryanjyoder]

Currently the snap of fast is only built for amd64. This package could be built and released automatically with https://build.snapcraft.io/. This would have benefit of producing builds for s390x, ppc64el, arm64, armhf, amd64, and i386 automatically on every commit to master. I was able to test this and it built successfully for all architectures.

This snap is very useful in a headless environment which is more common on non-amd64 architectures (I want to run this on my raspberry pi :D).

For this to work, the snap directory would have to be moved to the root of repo so it could be found and the source in the snapcraft.yaml would have to be changed to . instead of ../../. I could create a pr for these changes if you would like.

[ddo]

that would be great