Add delete-test-resources-base yml

What does this MR do?

Adding .delete-test-resources-base for delete-test-resources job

I'm thinking this is the base then in Staging, Preprod, Staging-canary, Staging-ref, Canary, Production, each add delete-test-resources job under stage cleanup which extends this base.

Check-list

• Verify the change in all affected pipelines.