Add tag service description as an include

Author: dannyfallon

src/intercom/Service/config/intercom_v3.json

@@ -7,6 +7,7 @@
         "intercom_v3_company.json",
         "intercom_v3_conversation.json",
         "intercom_v3_event.json",
+        "intercom_v3_tag.json",
         "intercom_v3_user.json"
     ]
 }