Add Github Actions based CI with neutronics simulations

[shimwell]

To include neutronics simulations of the shapes and componetns we a few extra parts:

-[ ] Include an export_h5m for Shape objects (currently it just works for reactors) -[ ] include openmc, embree double down, dagmc in the docker image -[ ] add a new class similar to the neutronics_model_from_reactor.py model from reactors but make it accept Shapes as an input -[ ] allow the new neutronics model from shpaes class accept openmc sources to allow point sources for testing.