Clean Up cms-metalsmith-build in Github and Confluence

[gracekretschmer-metrostar]

User Story or Problem Statement

As a member of the CMS team, I need to know that the CMS documentation is accurate to the current CMS set-up.

Description or Additional Context

https://github.com/department-of-veterans-affairs/va.gov-team/tree/master/products/platform/cms-metalsmith-build

Request from Erika:

Do you think we can archive this or put some note on it about it being historical documentation and not factual on current state?

Steps for Implementation

• Move documentation that is not relevant anymore into the archive folders.

Acceptance Criteria

• All irrelevant document has been moved into the archive folders.
• All soon to be irrelevant documentation has been flagged as soon to be retired documentation
• Any relevant documentation is updated as needed.