[clang] [clang-tools-extra] [clang-tidy] Add new check: `readability-redundant-typename` (PR #161574)

[Baranov Victor via cfe-commits]

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@@ -0,0 +1,19 @@
+// RUN: %check_clang_tidy -std=c++98 %s readability-redundant-typename %t \
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vbvictor wrote:

We could have c++03 here too?

https://github.com/llvm/llvm-project/pull/161574