Add build tests using github actions

[Jaeyoung-Lim]

Problem Description The Jenkins CI that is currently being used doesn't seem to be transparent and does not support Ubuntu Focal. Most PR's build test appear to be broken therefore does not give very useful feedback on evaluating PRs

Proposed Solution This PR adds a build test using github actions of this package for the following ROS versions

• ROS Noetic (Ubuntu 20.04 Focal)
• ROS Melodic (Ubuntu 18.04 Bionic)

By adding the build tests some of the dependencies that were either missing or self including (voxblox was also part of the dependency of this package) has been fixed.

Testing Since github actions are not being triggered before this PR getting merged, the output can be found running on the fork: https://github.com/Jaeyoung-Lim/voxblox/pull/1

@alexmillane Is there anychance that the github actions are disabled in this repo?

Additional Context

• https://github.com/ethz-asl/voxblox/pull/379 was included to show that this can be used to verify build testing in ROS Noetic

[ethzasl-jenkins]

Can one of the admins verify this patch?

[alexmillane]

@Jaeyoung-Lim Thanks for this. I think this is a good idea. The fact the build is broken is blocking us from merging some important changes #379, so we should really fix this, and this seems like the way to go.

I just shot you an email to sort out some details.

[Jaeyoung-Lim]

@alexmillane Thanks! If you have admin rights, could you enable github actions so that the builds would start running?

[helenol]

Add to whitelist

[Jaeyoung-Lim]

@helenol Thanks!