Normalize user group in GraphQL queries

client/src/graphql/gql/fragments/roomParts.gql

@@ -1,3 +1,4 @@
+#import "./userGroupParts.gql"
 fragment RoomParts on RoomNode {
   id
   slug
@@ -6,8 +7,6 @@ fragment RoomParts on RoomNode {
   appearance
   description
   userGroup {
-    id
-    name
-    year
+    ...UserGroupParts
   }
 }

client/src/graphql/gql/fragments/userGroupParts.gql

@@ -0,0 +1,5 @@
+fragment UserGroupParts on UserGroupNode {
+  id
+  name
+  year
+}

client/src/graphql/gql/userGroupsQuery.gql

@@ -1,12 +1,9 @@
+#import "./fragments/userGroupParts.gql"
 query UserGroupsQuery {
   userGroups {
     edges {
       node {
-        id
-        pk
-        name
-        year
-        isDeleted
+        ...UserGroupParts
       }
     }
   }