[clang-tools-extra] [clangd] Add inlay hints for default function arguments and implicit lambda captures (PR #95712)

[Nathan Ridge via cfe-commits]

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@@ -1681,6 +1681,21 @@ enum class InlayHintKind {
   /// This is a clangd extension.
   BlockEnd = 4,
 
+  /// An inlay hint that is for a variable captured implicitly in a lambda.
+  ///
+  /// An example of parameter hint for implicit lambda captures:
+  ///    [&^] { return A; };
+  /// Adds an inlay hint ": A".
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HighCommander4 wrote:

nit: please mention `/// This is a clangd extension.` for any new hint kinds

https://github.com/llvm/llvm-project/pull/95712