[clang] [clang] Introduce "binary" StringLiteral for #embed data (PR #127629)

[Mariya Podchishchaeva via cfe-commits]

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@@ -1752,7 +1752,8 @@ enum class StringLiteralKind {
   UTF8,
   UTF16,
   UTF32,
-  Unevaluated
+  Unevaluated,
+  Binary
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Fznamznon wrote:

I added some comment. Do you think it turned out helpful?

https://github.com/llvm/llvm-project/pull/127629