Generate Github Action job summary markdown for MatrixResultsReport

[AaronMT]

Trying out the marketplace Flank Github Action today and it works great. Thanks (@piotradamczyk5). Would it be possible to generate any summary markdown from the MatrixResultsReport (and or from shard data from the JSON artifacts) to the run summary page (feel free to dupe to an open bug)? I'm just interested in elevating the matrix link, listing any failures/flakes and maybe device data.

https://docs.github.com/en/actions/using-workflows/workflow-commands-for-github-actions#adding-a-job-summary