Unittests for python module

[StjerneIdioten]

Is your feature request related to a problem? Please describe. There is no testing whether or not a new feature update breaks any of the existing functionality before creating automatically creating a new build on github.

Describe the solution you'd like Blender supports running through the commandline without gui, this means that unittesting is possible, which could be integrated with the CI that creates the builds on the buildserver.

Additional context Blender in commandline