[llvm] [CodingStandard] Require Unix line endings for C/C++ source and headers (PR #161228)

[Rahul Joshi via llvm-commits]

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@@ -1790,6 +1790,13 @@ would help to avoid running into a "dangling else" situation.
       markAsIgnored(D);
   }
 
+Use Unix style line endings for source files
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jurahul wrote:

I know we don't run clang-tidy yet on all files, but assuming that will happen over time, we can build this into cland-tidy

https://github.com/llvm/llvm-project/pull/161228