Benchmark differ extensions

[cameel]

Related to #12522.

There are a few tiny features that would be nice to have in benchmark differ/downloader that I haven't implemented in #12804 and #12818. I'm creating this issue to track what I'm still going to implement:

• Option to include a column with absolute values next to relative ones in the table.
• Script for filtering projects/presets. This would allow for example to filter a benchmark summary into two JSONs - one for IR and one for legacy - and diff them to see how the codegens compare.
• Option not to show zero values (requested in Benchmark differ #12804 (comment))
  • Alternatively: hiding "unimportant" values (zeros and rounded to zero, missing on one side, different version, type error, etc.)
• Option not to skip values when versions differ (Benchmark differ #12804 (comment))

[github-actions]

This issue has been marked as stale due to inactivity for the last 90 days.
It will be automatically closed in 7 days.

[github-actions]

Hi everyone! This issue has been automatically closed due to inactivity.
If you think this issue is still relevant in the latest Solidity version and you have something to contribute, feel free to reopen.
However, unless the issue is a concrete proposal that can be implemented, we recommend starting a language discussion on the forum instead.