Add Fleet to the list of MDM partners

[dherder]

Proposed changes

• https://developers.cloudflare.com/cloudflare-one/connections/connect-devices/warp/deployment/mdm-deployment/partners/

Subject Matter

How to deploy Cloudflare WARP client with Fleet

Content Location

A new document in the partners section with a callout to a new page with the Fleet instructions on the Overview page.

Additional information

PR for review: #17606

[crwaters16]

Hey @dherder, thanks for opening an issue! Since you've already opened a PR with this edit, going to close this issue so we aren't double-counting this work. We'll review the PR soon!