[llvm] Create a EncodingConverter class with both iconv and icu support. (PR #138893)

[Hubert Tong via llvm-commits]

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@@ -0,0 +1,140 @@
+//===-- TextEncodingConverter.h - Encoding conversion class -------*- C++ -*-=//
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hubert-reinterpretcast wrote:

Comment should match filename. Either name looks fine to me.

https://github.com/llvm/llvm-project/pull/138893