Improve DXIL debug data handling for DIDerivedType's

Add cases for:
DW_TAG_restrict_type
DW_TAG_reference_type

Parse the base type for any non-null base types of unhandled DIDerivedType's

Author: Zorro666

renderdoc/driver/shaders/dxil/dxil_debug.cpp

@@ -6736,12 +6736,16 @@ const TypeData &Debugger::AddDebugType(const DXIL::Metadata *typeMD)
       const DIDerivedType *derivedType = base->As<DIDerivedType>();
       switch(derivedType->tag)
       {
+        case DW_TAG_restrict_type:
         case DW_TAG_const_type:
+        case DW_TAG_reference_type:
         case DW_TAG_pointer_type:
         case DW_TAG_typedef: typeData = AddDebugType(derivedType->base); break;
         default:
           RDCERR("Unhandled DIDerivedType DIDerivedType Tag type %s",
                  ToStr(derivedType->tag).c_str());
+          if(derivedType->base)
+            typeData = AddDebugType(derivedType->base);
           break;
       }
       break;