GitLab Service-Integration Blueprint - Convert requirements into table

What does this MR do and why?

This MR converts the list of requirements into a table so we can properly track and close all the requirements from this blueprint and make sure we solve with Runway.

Closes gitlab-com/gl-infra&1112 (closed)

Screenshots or screen recordings

Screenshots are required for UI changes, and strongly recommended for all other merge requests.

Before	After

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.