- Remove notes about MDM being "in development and not ready for
production"
- API endpoints that users might automate are moved to the [REST API doc
page](https://fleetdm.com/docs/using-fleet/rest-api)
- Broke up the single MDM doc into multiple ones organized by category
- Changed any links to point to the new docs
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Co-authored-by: Noah Talerman <noahtal@umich.edu>
Co-authored-by: Noah Talerman <47070608+noahtalerman@users.noreply.github.com>