Add following followers to user model

src/schema.gql

@@ -342,6 +342,8 @@ type UserGQL {
   profileImageUri: String
   createdAt: DateTime
   updatedAt: DateTime
+  following: [Int!]
+  followers: [Int!]
 }
 
 type ShotAnnotationGQL {
@@ -594,6 +596,8 @@ type Mutation {
   ): GetProfileUploadLinkReturn!
   editProfileImageUri(profileImageUri: String!): UserGQL!
   editUser(input: EditUserInputGQL!): UserGQL!
+  followUser(followedUserId: Int!): UserGQL!
+  unfollowUser(followedUserId: Int!): UserGQL!
   createUploadStream(
     videoMetadata: VideoMetadataInput!
   ): CreateUploadStreamReturn!