Add getPlayTime endpoint, remove elapsedTime

src/schema.gql

@@ -5,6 +5,7 @@ type Query {
   getUser(userId: Int!): UserGQL
   getLoggedInUser: UserGQL
   getDeployedConfig: DeployedConfigGQL!
+  getPlayTime(userId: Int!): UserPlayTimeGQL!
   getVideo(videoId: Int!): VideoGQL!
   getShots(filterInput: FilterInput = null): [ShotGQL!]!
   getBucketSet(keyName: String!): BucketSetGQL
@@ -127,7 +128,6 @@ type UserGQL {
   profileImageUri: String
   createdAt: DateTime
   updatedAt: DateTime
-  elapsedTime: Float!
 }
 
 """
@@ -139,6 +139,10 @@ type DeployedConfigGQL {
   allowNewUsers: Boolean!
 }
 
+type UserPlayTimeGQL {
+  totalSeconds: Float!
+}
+
 type VideoGQL {
   id: Int!
   owner: UserGQL