forward declare new operator

as it is required by MakeFunctionCallable

Author: Vipul-Cariappa

lib/CppInterOp/CppInterOp.cpp

@@ -3425,6 +3425,7 @@ TInterp_t CreateInterpreter(const std::vector<const char*>& Args /*={}*/,
   }
 
   I->declare(R"(
+    void* operator new(__SIZE_TYPE__, void*) noexcept;
     namespace __internal_CppInterOp {
     template <typename Signature>
     struct function;