[clang] [Clang][Lex] Implement CWG3013: Error if #embed parameters were defined as macros (PR #224769)

[Mariya Podchishchaeva via cfe-commits]

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@@ -518,6 +530,12 @@ features cannot lower the translation-unit ABI level;
 
 - Improve Clang diagnoses when unary `__imag` operator with non-complex type operand is used as lvalue. (GH222383)
 
+- Added `-Wembed-parameter-is-macro`, which warns in C if an `#embed` directive
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Fznamznon wrote:

Ugh, do we really need 3 release notes for the same thing? 

https://github.com/llvm/llvm-project/pull/224769