Hubs Documentation Reorganization

## Prerequisites

- [x] Our version of Docusaurus should be updated before starting on this.
- https://github.com/Hubs-Foundation/hubs-docs/pull/267

## Planning documents

Possible reorganization structures:

* [Hubs Docs Structure Reorganization Google Doc](https://docs.google.com/document/d/1rHsPQYgWbhbD3wxyR5QJDvZ9bQELr15p3i_aprqaICg/edit?tab=t.0#heading=h.sazcm1wiqz9e)
* [Miro reorganization map](https://miro.com/app/board/uXjVIt2zIOc=/) - ask @hobbs-Hobbler for access

## Issues to address (incomplete)

- [ ] Documentation for identities in the Admin Panel - see: [Dom's Discord Post](https://discord.com/channels/498741086295031808/819188464145924117/933504916176134205)
- PR:
- [ ] https://github.com/Hubs-Foundation/hubs-docs/issues/262
- PR:

Start by confirming that the Docusaurus prerequisite in PR #267 is complete, then review the Google Doc, Miro reorganization map, and issue #262. The work is done when an agreed documentation structure is implemented and the Admin Panel identities documentation and other listed items are addressed with their PR links recorded.

Written by the indexing model from the issue text.