[clang-tools-extra] [clang-tidy] Add portability-avoid-platform-specific-fundamental-types (PR #146970)

[JJ Marr via cfe-commits]

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@@ -0,0 +1,63 @@
+// RUN: %check_clang_tidy %s portability-avoid-platform-specific-fundamental-types %t -- -config="{CheckOptions: [{key: portability-avoid-platform-specific-fundamental-types.WarnOnChars, value: true}]}" -header-filter=.* -- -std=c++11
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jj-marr wrote:

should also ensure that ints aren't linted when WarnOnChars on its own is enabled and the other two are disabled

https://github.com/llvm/llvm-project/pull/146970