refactor(core): remove unused CoreResourceKinds

[AlessandroPomponio]

Summary

This pull request removes unused resource kinds from the orchestrator core module. Specifically, it removes the RESOURCE, RESULT, and OPERATOR resource kinds from the CoreResourceKinds enum and cleans up related references throughout the codebase. Additionally, it makes the kind field in ADOResource a required field by removing its default value.

Closes #251

Files Changed

📄 orchestrator/cli/utils/resources/mappings.py

Removes the OPERATOR resource kind from the resource_kinds_to_human mapping dictionary, which was used to provide human-readable names for resource types.

📄 orchestrator/core/__init__.py

Removes the RESOURCE resource kind mapping from the kindmap dictionary. Also adds explicit type annotation (as ADOResource) to the ADOResource import for better type clarity.

📄 orchestrator/core/resources.py

Removes three unused resource kinds from the CoreResourceKinds enum: RESOURCE, RESULT, and OPERATOR. Additionally, removes the default value of CoreResourceKinds.RESOURCE from the kind field in the ADOResource class, making it a required field instead of optional.

[michael-johnston]

There is an import change that looks unnecessary