Docs: Git Sync scenarios (#115199)
* WIP
* Review
* Move scenarions
* Structure fix
* Edits, fix
* Vale, x-refs
* Feedback, tweaks
* Consolidate HA, titles
* Prettier
* Prettier
* Adding missing content
* Minor edits
* Links
* Prettier
(cherry picked from commit f3421b9718)
Co-authored-by: Anna Urbiztondo <anna.urbiztondo@grafana.com>