[compiler,modules] Introduce JS operators for module loads and stores.

src/compiler/typer.cc

Index: src/compiler/typer.cc
diff --git a/src/compiler/typer.cc b/src/compiler/typer.cc
index 7c2565cc42ee493fa03b185d675b2e8b92191694..ab979aaf3a869be29cead7c4fa6ca8a3d75db5a7 100644
--- a/src/compiler/typer.cc
+++ b/src/compiler/typer.cc
@@ -1488,6 +1488,13 @@ Type* Typer::Visitor::TypeJSStoreMessage(Node* node) {
   return nullptr;
 }
 
+Type* Typer::Visitor::TypeJSLoadModule(Node* node) { return Type::Any(); }
+
+Type* Typer::Visitor::TypeJSStoreModule(Node* node) {
+  UNREACHABLE();
+  return nullptr;
+}
+
 Type* Typer::Visitor::TypeJSGeneratorStore(Node* node) {
   UNREACHABLE();
   return nullptr;