Increment the thumbnail version when cube_data or color_data is modified.

rc_database/src/schema/common_query.rs

@@ -5,6 +5,12 @@ pub struct Id {
     pub id: i32,
 }
 
+#[derive(FromQueryResult)]
+pub struct IdAndThumbnailVersion {
+    pub id: i32,
+    pub thumbnail_version: i32,
+}
+
 #[derive(FromQueryResult)]
 pub struct SingleColumn<T: sea_orm::TryGetable> {
     pub column: T,