[clang-tools-extra] [llvm] [MLGO] Upstream the corpus extraction tooling (PR #72319)

[Aiden Grossman via cfe-commits]

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@@ -0,0 +1,12 @@
+# MLGO Python Library
+
+This folder contains the MLGO python library. This library consists of telling
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boomanaiden154 wrote:

Updated it to calling this the folder for MLGO Python Utilities. Good catch on the first line. Not sure exactly what happened there.

https://github.com/llvm/llvm-project/pull/72319