Add route /family/list

geneit_backend/src/controllers/families_controller.rs

@@ -63,3 +63,8 @@ pub async fn join(
 
     Ok(HttpResponse::Accepted().finish())
 }
+
+/// Get the list of families of the user
+pub async fn list(token: LoginToken) -> HttpResult {
+    Ok(HttpResponse::Ok().json(families_service::get_user_memberships(token.user_id).await?))
+}