Add interface for bulk update studio (#6208)

graphql/schema/schema.graphql

@@ -371,6 +371,7 @@ type Mutation {
   studioUpdate(input: StudioUpdateInput!): Studio
   studioDestroy(input: StudioDestroyInput!): Boolean!
   studiosDestroy(ids: [ID!]!): Boolean!
+  bulkStudioUpdate(input: BulkStudioUpdateInput!): [Studio!]
 
   movieCreate(input: MovieCreateInput!): Movie
     @deprecated(reason: "Use groupCreate instead")

graphql/schema/types/studio.graphql

@@ -59,6 +59,18 @@ input StudioUpdateInput {
   ignore_auto_tag: Boolean
 }
 
+input BulkStudioUpdateInput {
+  ids: [ID!]!
+  url: String
+  parent_id: ID
+  # rating expressed as 1-100
+  rating100: Int
+  favorite: Boolean
+  details: String
+  tag_ids: BulkUpdateIds
+  ignore_auto_tag: Boolean
+}
+
 input StudioDestroyInput {
   id: ID!
 }