ci initial commit

[grvvy]

Thanks @miek for setting up PDM in LUNA.

Tested locally with act:

| Ran 46 tests in 0.010s
| 
| OK
[unit_tests/test (3.12)-5]   ✅  Success - Main Run tests
[unit_tests/test (3.8)-1 ]   ✅  Success - Post Set up PDM
[unit_tests/test (3.12)-5] ⭐ Run Post Set up PDM
[unit_tests/test (3.12)-5]   🐳  docker exec cmd=[node /var/run/act/actions/pdm-project-setup-pdm@v4/dist/cache-save.js] user= workdir=
[unit_tests/test (3.8)-1 ] Cleaning up container for job test (3.8)
[unit_tests/test (3.12)-5]   ✅  Success - Post Set up PDM
[unit_tests/test (3.12)-5] Cleaning up container for job test (3.12)
[unit_tests/test (3.8)-1 ] 🏁  Job succeeded
[unit_tests/test (3.12)-5] 🏁  Job succeeded

Closes #1