[modules] Add a requested_modules field to Module

src/objects-printer.cc

Index: src/objects-printer.cc
diff --git a/src/objects-printer.cc b/src/objects-printer.cc
index 52bbcd5aca8d34bc0f9ab48635f93a4b901d22a9..b19d31a61c708709469111920e4abee42b2719f1 100644
--- a/src/objects-printer.cc
+++ b/src/objects-printer.cc
@@ -1149,6 +1149,7 @@ void Module::ModulePrint(std::ostream& os) {  // NOLINT
   HeapObject::PrintHeader(os, "Module");
   os << "\n - code: " << Brief(code());
   os << "\n - exports: " << Brief(exports());
+  os << "\n - requested_modules: " << Brief(requested_modules());
   os << "\n";
 }