[clang-tools-extra] [clang-tidy] Add new check bugprone-tagged-union-member-count (PR #89925)

[via cfe-commits]

================
@@ -0,0 +1,181 @@
+// RUN: %check_clang_tidy %s bugprone-tagged-union-member-count %t
+
+enum tags3 {
+	tags3_1,
----------------
EugeneZelenko wrote:

Will be good idea to run Clang-format over this file.

https://github.com/llvm/llvm-project/pull/89925