Migrate to Id type

src/import.rs

@@ -446,7 +446,7 @@ impl ImportState {
 
                     let map_indices = Self::get_mapping_indices(&group);
                     let mut group_entity = WordGroup {
-                        id: 0,
+                        id: 0.into(),
                         name: group.name.clone(),
                     };
                     {