[promisehook] Add is_promisehook_enabled

src/assembler.h

Index: src/assembler.h
diff --git a/src/assembler.h b/src/assembler.h
index ff6bfd48f2861de683eb27347c174a500fea427f..7c6cd91b5acdec2e548427b9e20112628e711d23 100644
--- a/src/assembler.h
+++ b/src/assembler.h
@@ -1041,6 +1041,8 @@ class ExternalReference BASE_EMBEDDED {
   static ExternalReference invoke_function_callback(Isolate* isolate);
   static ExternalReference invoke_accessor_getter_callback(Isolate* isolate);
 
+  static ExternalReference is_promisehook_enabled_address(Isolate* isolate);
+
   V8_EXPORT_PRIVATE static ExternalReference runtime_function_table_address(
       Isolate* isolate);