Support for Alpine Linux Arm

[danzel]

Currently libraries are shipped for musl-x64 and linux-arm, but not musl-arm (or arm64).
Would be nice to have them to support alpine deployments on RPI devices. Thanks!

Related #192 #214

[danzel]

I've started on this and should have some PRs next week 🙏

[danzel]

Two PRs sent 💪

[ericsink]

I think these changes are available in prerelease 2.1.0-pre20220427180151, now on nuget.

[danzel]

Thanks!
We've moved off musl now so I'm not in a position to test.