[llvm] [libcxx] Add pre-commit hooks and git config for libc++ & git-clang-format. (PR #73798)

[Tobias Hieta via llvm-commits]

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@@ -0,0 +1,31 @@
+#!/bin/bash
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tru wrote:

> It doesn't support formatting code outside of github actions. This is meant for our users to use. Ideally we would reconcile the two of these, but I don't think we can make that happen here.

Happy to work on this, I rather we fix this now than have two different scripts floating around. I will look at this asap.

https://github.com/llvm/llvm-project/pull/73798