Operate First documentation in Backstage

[tumido]

Additional context

Convert these GitOps docs to Backstage documentations for each app.

Acceptance Criteria

• Every component docs is buildable via mkdocs
• Each component is represented in Backstage

Relevant links

No response

[sesheta]

Issues go stale after 90d of inactivity.
Mark the issue as fresh with /remove-lifecycle stale.
Stale issues rot after an additional 30d of inactivity and eventually close.

If this issue is safe to close now please do so with /close.

/lifecycle stale

[SamoKopecky]

/remove-lifecycle stale