create ChatQueries.js

+import { gql } from "apollo-boost";
+
+export const SUBSCRIPTION_MSG = gql`
+  subscription subMessage {
+    subMessage {
+      id
+      text
+      sender {
+        id
+        username
+      }
+      createdAt
+    }
+  }
+`;
+
+export const NEW_MESSAGE = gql`
+  mutation newMessage($message: String) {
+    newMessage(message: $message) {
+      id
+      text
+      sender {
+        id
+        username
+      }
+      createdAt
+    }
+  }
+`;