Add functionality to retire tags

src/schema.gql

@@ -60,7 +60,7 @@ type Query {
     after: String = null
     filters: VideoFilterInput = null
   ): VideoHistoryGQL!
-  getUserTags: [TagGQL!]!
+  getUserTags(includeRetiredTags: Boolean = false): [TagGQL!]!
   getVideo(videoId: Int!, debuggingJson: JSON = null): VideoGQL!
   getVideos(videoIds: [Int!]!): [VideoGQL!]!
   getFeedVideos(
@@ -718,6 +718,7 @@ type TagGQL {
   id: Int!
   name: String!
   tagClasses: [TagClassGQL!]
+  retired: Boolean!
 }
 
 type TagClassGQL {
@@ -784,6 +785,7 @@ type Mutation {
   editUser(input: EditUserInputGQL!): UserGQL!
   followUser(followedUserId: Int!): UserGQL!
   unfollowUser(followedUserId: Int!): UserGQL!
+  retireTags(tagIds: [Int!]!): Boolean!
   findPrerecordTableLayout(b64Image: String!, videoId: Int!): HomographyInfoGQL
   createUploadStream(
     videoMetadata: VideoMetadataInput!