Add keywords to Merchandise

src/models/merchandise_list.rs

@@ -21,6 +21,7 @@ pub struct Merchandise {
     pub form_type: u32,
     pub is_food: bool,
     pub price: u32,
+    pub keywords: Vec<String>,
 }
 
 #[derive(Debug, Serialize, Deserialize, Clone)]

src/problem/mod.rs

@@ -61,6 +61,7 @@ pub fn from_anyhow(error: anyhow::Error) -> HttpApiProblem {
                         return HttpApiProblem::with_title_and_type_from_status(
                             StatusCode::BAD_REQUEST,
                         )
+                        // TODO: better message when this is triggered by a non-cascading DELETE
                         .set_detail("Owner does not exist");
                     } else if code == "23503"
                         && (constraint == "interior_ref_lists_shop_id_fkey"