update createRoom resolver and typedef

 type Mutation {
-  createRoom(participantsId: [Int], categories: [Int], name: String!): Room!
+  createRoom(name: String!): Room!
 }

-import { prisma } from "../../../utils";
+import { prisma, isAuthenticated } from "../../../utils";
 
 export default {
   Mutation: {
-    createRoom: async (_, args) => {
-      const { participantsId, categories, name } = args;
-      let newRoom, participantId;
-      if (participantsId !== undefined) {
+    createRoom: async (_, args, { request }) => {
+      isAuthenticated(request);
+      const { name } = args;
+      const { user } = request;
+      let newRoom;
+      if (name !== undefined) {
         newRoom = await prisma.room.create({
           data: {
-            participants: {
-              connect: {
-                id: (participantId = participantsId.forEach(
-                  (cur, _, __) => cur
-                )),
-              },
-            },
             name,
-          },
-        });
-      }
-      if (categories !== undefined) {
-        newRoom = await prisma.room.create({
-          data: {
-            categories: {
+            participants: {
               connect: {
-                id: (category = categories.forEach((cur, _, __) => cur)),
+                id: user.id,
               },
             },
-            name,
           },
         });
       }