Add resource to domain

[Ceredron]

Description

Change the simple service model with resource model that is more aligned with end state.

Actual RR/RRR integration where the database tables are replaced with network calls to RR/RRR in staging/prod.

Related Issue(s)

• #{issue number}

Verification

• Your code builds clean without any errors or warnings
• Manual testing done (required)
• Relevant automated test added (if you find this hard, leave it and we'll help out)
• All tests run green

Documentation

• User documentation is updated with a separate linked PR in altinn-studio-docs. (if applicable)

[RagnarFatland-Avanade]

Looks good with a small change of the location for Org number from Resource to Resource Owner :)
But we should discuss if we can use the "Resource" / "Resource Owner" concept instead of "Service Owner" with the product owner. I will start the discussion