[clang-tools-extra] [clang-tidy] Add `IgnoredFilesList` option to `readability-duplicate-include` (PR #168196)

[Baranov Victor via cfe-commits]

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@@ -0,0 +1,24 @@
+// RUN: %check_clang_tidy %s readability-duplicate-include %t -- \
+// RUN:   -config="{CheckOptions: {readability-duplicate-include.IgnoredFilesList: 'pack_.*\\.h'}}" -header-filter='' \
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vbvictor wrote:

Can we write `-header-filter=''` on next line so that each line wouldn't be very long.
We of course don't enforce 80-char here but it's good to keep lines closer threshold when possible.

https://github.com/llvm/llvm-project/pull/168196