add submitCancellationFeedback & cancellation reason enum

Reviewed-on: #212

src/operations/feed.gql

@@ -50,6 +50,7 @@ fragment VideoCardFields on VideoGQL {
     streamSegmentType
   }
   tableSize
+  pocketSize
   tags {
     tagClasses {
       name

src/operations/video.gql

@@ -211,13 +211,6 @@ query GetMedianRunForVideo($videoId: Int!) {
   }
 }
 
-query GetAverageDifficultyForVideo($videoId: Int!) {
-  getVideo(videoId: $videoId) {
-    id
-    averageDifficulty
-  }
-}
-
 fragment StreamWithEndFrames on UploadStreamGQL {
   id
   streamSegmentType

src/schema.gql

@@ -1072,6 +1072,10 @@ type Mutation {
   deleteUser: Boolean!
   createSubscription(priceId: String!): CreateSubscriptionResultGQL!
   cancelSubscription: UserSubscriptionStatusGQL!
+  submitCancellationFeedback(
+    reasons: [CancellationReasonEnum!] = null
+    feedback: String = null
+  ): Boolean!
   findPrerecordTableLayout(b64Image: String!, videoId: Int!): HomographyInfoGQL
   createUploadStream(
     videoMetadata: VideoMetadataInput!
@@ -1196,6 +1200,15 @@ type CreateSubscriptionResultGQL {
   sessionId: String!
 }
 
+enum CancellationReasonEnum {
+  DONT_PLAY_ENOUGH
+  TOO_EXPENSIVE
+  MISSING_FEATURES
+  TECHNICAL_ISSUES
+  DATA_NOT_ACCURATE
+  OTHER
+}
+
 type CreateUploadStreamReturn {
   videoId: Int!
 }