[clang-tools-extra] [clangd] Support go-to-definition on type hints. The core part (PR #86629)

[Nathan Ridge via cfe-commits]

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@@ -372,6 +374,292 @@ maybeDropCxxExplicitObjectParameters(ArrayRef<const ParmVarDecl *> Params) {
   return Params;
 }
 
+class TypeInlayHintLabelPartBuilder
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HighCommander4 wrote:

suggestion for shorter name: `TypeHintBuilder`

https://github.com/llvm/llvm-project/pull/86629