Use new "Job Summaries" GitHub Actions feature

[mayaCostantini]

Is your feature request related to a problem? Please describe.

Using Job Summaries could be useful to display essential advise information and workflow status without overloading the Pull Request comment, and could eventually replace it.

Describe the solution you'd like

Use Job Summaries to display the most interesting parts of the advise report, link to Search UI, input parameters used, etc.

Describe alternatives you've considered

Leave output in the comment only.

[mayaCostantini]

/sig stack-guidance /priority critical-urgent

[mayaCostantini]

Closed by #57