[core] Profiling config

[romgrk]

I've setup a local folder to enable low-level profiling of our code (when it's possible to run a pure JS version with no DOM) with d8, the v8 debug shell. It requires a few very minor code changes, as well as a mock version of react (just enough so we can setup our hooks in test cases).

I'm not sure if we want to commit these changes, but I thought I'd share these as the setup is not super trivial. If you want to use it, you can always fetch the branch locally and cherry-pick the commit when you want to profile some change you made.

See profiling/src/filtering.ts for an example how to create a test case, and profiling/README.md for usage.

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[mui-bot]

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These are the results for the performance tests:

Test case	Unit	Min	Max	Median	Mean	σ
Filter 100k rows	ms	657.9	1,412.7	1,412.7	1,052.22	291.298
Sort 100k rows	ms	752.7	1,273.7	1,273.7	1,058.58	202.778
Select 100k rows	ms	321.5	433	366.6	371.44	35.66
Deselect 100k rows	ms	232.8	404.8	298.5	307.9	55.746

Generated by :no_entry_sign: dangerJS against 1a98215c4bbd4266279b1a2754b4f5786c9f6ec8

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