Support arm64 Linux builds

[sirredbeard]

Is your feature request related to a problem? Please describe.

azure-cli is available for amd64 through Microsoft's official repos for Debian, Ubuntu, and OpenSUSE.

See Debian and Ubuntu repo at https://packages.microsoft.com/repos/azure-cli/dists/.

However, azure-cli is not available for arm64 on any of those systems.

Describe the solution you'd like

Add arm64 builds to Microsoft's official repos for Linux and WSL.

Describe alternatives you've considered

I have considered re-building each release for arm64 anew each time.

[yugangw-msft]

@troydai could you clarify?

[troydai]

I'll look into that.

[sirredbeard]

Thank you Troy.