[clang] Implement [[msvc::no_unique_address]] (PR #65675)

[Shafik Yaghmour via cfe-commits]

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@@ -3317,6 +3353,7 @@ ASTContext::getASTRecordLayout(const RecordDecl *D) const {
           Builder.EndsWithZeroSizedObject, Builder.LeadsWithZeroSizedBase,
           Builder.Bases, Builder.VBases);
     } else {
+      MicrosoftRecordLayoutBuilder Builder(*this, /*EmptySubobjects*/ nullptr);
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shafik wrote:

see [bugprone-argument-comment](https://clang.llvm.org/extra/clang-tidy/checks/bugprone/argument-comment.html)

https://github.com/llvm/llvm-project/pull/65675