refactor(docs): re-structure (#4498)
* docs: beta initial commit
* docs(oauth): finish initial tutorial
* docs(oauth-tutorial): finish guide
* docs(docusaurus): just log broken links
* docs: re-organising beta
* docs(beta): sort documents for sorting
* docs: more re-structure
* docs: more re-structure (2)
* fix: more WIP
* fix: more WIP
* chore: more updates
* chore: wip
* chore: wip
* fix lock file
* docs(getting-started): credentials
* chore: remove json-server file
* chore: cleanup
* remove mongodb from dev app
* chore: cleanup
* revert
* chore: cleanup
* chore: more cleanup changes
Co-authored-by: Balázs Orbán <info@balazsorban.com>
