Kibana Fleet support

:rocket: Update on Kibana Fleet support

Hey everyone — great news! We have Fleet support up and running in a proof-of-concept state.

If you want to try it out right now, you can experiment with it in our ROR Sandbox:

:link: PoC PR: [RORDEV-1368] PoC: Fleet support (8.19.7 example) by coutoPL · Pull Request #61 · beshu-tech/ror-sandbox · GitHub

The instructions for running it locally are included in the PR description.

At this stage, the feature is functional, but we still need to clean up the implementation, add tests, and polish the integration. If everything goes well, you can expect it to ship as part of ReadonlyREST 1.68.0 — later this year.

Feedback is very welcome — feel free to play with it and let us know what you think!