[typespec-azure-resource-manager]: Improve resource resolution tests to include less static text

- Create a few more test points in the resolution API to allow for more granular unit tests
- Parameterize the end-to-end test code to make both specification and validations simpler.

Start by locating the resolution API and the end-to-end test code in the typespec-azure-resource-manager area. Review how resolution and validation are currently exercised; done means adding more granular resolution test points and parameterizing the end-to-end tests so specifications and validations are simpler.

Written by the indexing model from the issue text.