Add statistics for CGLM dataset

[MaxiBoether]

We add some statistic collection for the different CGLM variants and helpful plotting scripts.

PR 1/n of porting SIGMOD changes to main. This one should probably not require an indepth review, mostly stuff I needed. Not the prettiest code, but why bother using defaultdicts :D

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.83%. Comparing base (72ffdca) to head (d6d7b72).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #516   +/-   ##
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  Coverage   82.83%   82.83%           
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  Files         220      220           
  Lines       10232    10232           
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  Hits         8476     8476           
  Misses       1756     1756           

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[github-actions]

^{( % to main)
( % to main)}

[robinholzi]

Looks like the scripts are doing their job :) Maybe we can use notebooks to signal that it's not busyness logic?

[XianzheMa]

I'd say let's merge this. It's in the benchmark/ directory; the scripts there are just for quick utility purpose.

It's better to have raw code that helps than not have it.

Let me update the branch, address CI, and merge it when CI passes.