docs(cpt): add info about product integration with Cockpit

[nerda-codes]

[sfinet-scw]

Thank you Neda !! not all scaleway products who have metrics and logs integrated with Cockpit provide alerts, do you think we can be slightly more explicit ? i'll think of a first draft wording if it can help and let you know & current alerts are rules made on our metrics not our logs, so we can remove the mention of logs to simplify

[nerda-codes]

Thank you @sfinet-scw for the feedback, I'll create a new section in the page with a table grouping only the Scaleway products that have alerts, wdyt?

[nerda-codes]

I'll be closing this PR and reopen it when my ticket for this topic is treated on the engineering side 🙏🏼