Create OB11FriendAddNoticeEvent.ts

src/onebot11/event/notice/OB11FriendAddNoticeEvent.ts

@@ -0,0 +1,11 @@
+import { OB11BaseNoticeEvent } from './OB11BaseNoticeEvent';
+
+export class OB11FriendAddNoticeEvent extends OB11BaseNoticeEvent {
+  notice_type = 'friend_add';
+  user_id: number;
+
+  public constructor(user_Id: number) {
+    super();
+    this.user_id = user_Id;
+  }
+}