add new perfInsights.py script to analyse the data generated in result_data branch

[kami619]

We are adding a script to analyze the generated performance test run results efficiently.

usage:

python perfInsights.py <directory_on_result_data_github_branch> <outputDir>

python perfInsights.py rosa_scalability/2024/07/23 results

Sample Output: https://github.com/user-attachments/files/16390815/rosa_scalability_runs_comparision.zip

[kami619]

@ahus1 if you like the script, I shall add docs for it and commit to this PR, lmk.

[ahus1]

I suppose this is some overlap with what we can do with Horreum, still it might be good for ad-hoc or explorative analysis. Feel free to add it to our repo together with some docs.

[kami619]

@ahus1 good to review and merge when you have some capacity to look at it. I have added the docs.