Add ARM builds to releases

[m-roberts]

Hi - would love for this application to have the same ARM builds as the 2.0.7 release of Touchegg!

[JoseExposito]

Yes! I had some issues generating the builds that I need to investigate. Meanwhile you can use the Flatpak version, an aarch64 build is automatically generated.

[JoseExposito]

@m-roberts do you know if there is any difference in pi-top/action-debian-package in terms of internet access when building for ARM?

The ARM build is failing to validate the appdata.xml file but the amd64 is not:

  2/3 Validate appstream file                 FAIL     0.76 s (exit status 1)
  
  --- command ---
  /usr/bin/appstream-util validate-relax data/com.github.joseexposito.touche.appdata.xml
  --- stdout ---
  data/com.github.joseexposito.touche.appdata.xml: FAILED:
  • file-invalid          : <screenshot> failed to load [https://raw.githubusercontent.com/JoseExposito/touche/master/.github/images/elementary.png]
  • file-invalid          : <screenshot> failed to load [https://raw.githubusercontent.com/JoseExposito/touche/master/.github/images/elementary-dark.png]
  --- stderr ---
  Validation of files failed

[m-roberts]

The only thing that should be different is that it is using QEMU to emulate different architecture. I'm not sure why that would be happening! Perhaps we can look into this more together if you continue to experience issues.

[JoseExposito]

I temporary disabled the appdata.xml file validation, and it seems that is the only issue that's stopping the build to work:
https://github.com/JoseExposito/touche/actions/runs/577360628

After a quick Google search I found this project and it seems like they also have the same issue:

Note: Pi 2 and Pi 3 support is currently experimental. Networking doesn't work and QEMU hangs once the machines are powered down requiring you to docker kill the container. See #4 for details.

I don't know if this could be relevant:
https://stackoverflow.com/questions/61562014/qemu-kernel-for-raspberry-pi-3-with-networking-and-virtio-support/64420363#64420363