Add a ModelStore as a submodule to the repository
This doesn't interact with the rest of the codebase, so let's test this out for a while and remove if it's not working as desired!
Please be advised that registry.cern.ch registry (Registry Service) will be unavailable next Monday, March 10th starting at 08:00h (Geneva time) for a short period of time. This may cause temporary disruptions to your workflows. Further information: OTG0154905
This doesn't interact with the rest of the codebase, so let's test this out for a while and remove if it's not working as desired!