Revival todo list

[Zehvogel]

This project has been sleeping for a bit but we are reviving it and I will use this issue to track some of the things to do:

• [ ] Split and update https://github.com/key4hep/k4ActsTracking/pull/10
  • [x] Rename GeoSvc to ActsGeoSvc https://github.com/key4hep/k4ActsTracking/pull/12
  • [ ] Add k4ActsTracking to key4hep-stack again in https://github.com/key4hep/key4hep-spack/ and update package recipe
  • [x] Update to newer ACTS api (pass logger instead of loglevel)
  • [x] Update CI https://github.com/key4hep/k4ActsTracking/pull/13
  • [ ] Add CI test
• [ ] Write "developer guide"
• [ ] Port further Gaudi algorithms from https://github.com/delitez/k4ActsTracking
  • [ ] and change them to use Gaudi functional once that is there
• [ ] LICENSE