adding example openapi spec for compute from nova

[selrahal]

I generated the openapi spec for openstack's compute service provided by nova by following the codegenerator project: https://opendev.org/openstack/codegenerator

[selrahal]

the podman script will run swagger ui locally to help trawl thru the 40K line file:

[Fale]

I think this can be integrated with #18, though the way those APIs are structured is imperative, not declarative, so it might not properly work in a DCM-like logics. We can still take the Object definition from this, though

[pkliczewski]

I think that should be considered a service provider. I agree it is a good starting point for us to build the data model for DCM.

[croadfeldt]

I've add this as an example service provider. Going to close this as something we've implemented there.