Explore non-unit based bimodality

[piotor87]

There are tests that show some sort of bimodality that is not caused by different units. e.g.

https://finngen.github.io/kanta_lab_preprocessing/injection/tests/p-inr-vt.html

So ideally we could recycle the code/logic of the injection scripts to return a table with tests that show some sort of bimodality.