[clang] [clang] Implement P2582R1: CTAD from inherited constructors (PR #98788)

[Shafik Yaghmour via cfe-commits]

================
@@ -2157,17 +2157,19 @@ CXXDeductionGuideDecl *CXXDeductionGuideDecl::Create(
     ASTContext &C, DeclContext *DC, SourceLocation StartLoc,
     ExplicitSpecifier ES, const DeclarationNameInfo &NameInfo, QualType T,
     TypeSourceInfo *TInfo, SourceLocation EndLocation, CXXConstructorDecl *Ctor,
-    DeductionCandidate Kind) {
-  return new (C, DC) CXXDeductionGuideDecl(C, DC, StartLoc, ES, NameInfo, T,
-                                           TInfo, EndLocation, Ctor, Kind);
+    DeductionCandidate Kind, CXXDeductionGuideDecl *SourceDG,
+    bool IsGeneratedFromInheritedConstructor) {
+  return new (C, DC) CXXDeductionGuideDecl(
+      C, DC, StartLoc, ES, NameInfo, T, TInfo, EndLocation, Ctor, Kind,
+      SourceDG, IsGeneratedFromInheritedConstructor);
 }
 
 CXXDeductionGuideDecl *
 CXXDeductionGuideDecl::CreateDeserialized(ASTContext &C, GlobalDeclID ID) {
   return new (C, ID) CXXDeductionGuideDecl(
       C, nullptr, SourceLocation(), ExplicitSpecifier(), DeclarationNameInfo(),
       QualType(), nullptr, SourceLocation(), nullptr,
-      DeductionCandidate::Normal);
+      DeductionCandidate::Normal, nullptr, false);
----------------
shafik wrote:

```suggestion
      DeductionCandidate::Normal, /*SourceDG=*/nullptr, /*IsGeneratedFromInheritedConstructor =*/false);
```

This is based on [bugprone argument comment](https://clang.llvm.org/extra/clang-tidy/checks/bugprone/argument-comment.html) convention.

https://github.com/llvm/llvm-project/pull/98788