[FEATURE] Add `stackql-exec` examples in a test workflow

[jeffreyaven]

Feature Description
Add examples of using the stackql-exec GitHub Actions Workflow (see stackql-exec in the GitHub Actions Marketplace)

Example(s)
stackql-exec can be used for infrastructure or resource provisioning or de-provisioning, including infrastructure-as-code operations. We are looking for some cool examples using one or more supported cloud, SaaS or IdP providers. For more information, see the StackQL Provider Registry Docs or the StackQL Docs.

Ask us a Question, we would be glad to help!