Move automated build/test to Github Actions

[paidforby]

TravisCI is no longer free? And has moved operations to travisci.com, so the automated build/test badges are broken. We should migrate those tests to Github Actions I guess? Unless someone has a better idea? I kinda live under a rock (as far as modern dev-ops is concerned).

[samuk]

Or consider a Gitlab move? https://about.gitlab.com/devops-tools/github-vs-gitlab/ci-missing-github-capabilities/ although that could involve more work?

I guess it depends if anyone has the inclination to continue the active development of Disaster Radio.

I tried again to get LoraLayer2 picked up by Meshtastic: https://meshtastic.discourse.group/t/mesh-routing-algorithm/2180/38 but it never really came to anything.

If I had C skills and was interested in this space I'd be helping port Reticulum to C: markqvist/Reticulum#2 Then trying to get Meshtastic to use Reticulum. The packet size is large, but I'm unclear if that can be worked around/improved.