[GHA] Generate Release Notes for Terraform Modules

[ph-One]

Description

It would be nice to have a spec/usage document with each module release

Notes

• Leverage terraform-docs
• Generate a README/Usage document and attach to release
• Generate a sample tfvars and attach to release

[ph-One]

Reopening

[npeterson54]

Did not quite complete, moving into next sprint

[npeterson54]

Due to unexpected PTO moving into next sprint

[ph-One]

Moving to backlog. This is a nice-to-have, and not something that should be placed ahead of, say, getting some critical components deployed.