fix: adds required fields to gemara artifacts

[hbraswelrh]

Summary

This PR was created to update the gemara artifacts introduced in PR #669. The ControlCatalog and Policy were missing the type fields and required applicability-groups. Once this PR is merged the tests and repo-scoped gemara schema validation should be revisited.

Related Issues

• Supports test: add container-based acceptance test infrastructure #669

Review Hints

# Validate the ControlCatalog
cue vet -c -d '#ControlCatalog' github.com/gemaraproj/gemara@v1.3.0 tests/acceptance/testdata/catalog.yaml

# Validate the Policy
cue vet -c -d '#Policy' github.com/gemaraproj/gemara@v1.0.0 tests/acceptance/testdata/policy.yaml

[marcusburghardt]

LGTM