[ci] Adding xdmfdiff to eve petsc container.
- Added xdmf lib guix package
- Added ogs packages using xdmf lib (will be contributed to guix upstream on next release)
- Added guix manifest files for them
- Fixed job "test container eve" to use the new container
- Tests covering your feature were added?
- Any new feature or behaviour change was documented?
- Add this merge request to the changelog
Edited by Lars Bilke