update graphql schema

 type User {
   id: ID!
   avatarUrl: String
-  name: String
+  name: String!
   email: String!
-  password: String
+  password: String!
   emailSecret: String
-  phoneNum: String
+  phoneNum: String!
   phoneSecret: String
   bio: String
   rooms: [Room]
   createdAt: String
   messages: [Message]
-  sender: Message
-  receiver: [Message]
+  from: Message
+  to: [Message]
 }
 
 type Room {
@@ -30,8 +30,8 @@ type Category {
 type Message {
   id: ID!
   text: String!
-  from: User!
-  to: User!
+  from: User
+  to: [User]
   room: Room!
   createdAt: String
   updatedAt: String