Use identifier field for unknown license plates (#17123)

* backend

* backend fixes

* api for search queries

* frontend

* docs

* add filterable scroll list to more filters pane for identifiers

* always publish identifier

web/src/views/search/SearchView.tsx

@@ -121,6 +121,7 @@ export default function SearchView({
   }, [config, searchFilter]);
 
   const { data: allSubLabels } = useSWR("sub_labels");
+  const { data: allIdentifiers } = useSWR("identifiers");
 
   const allZones = useMemo<string[]>(() => {
     if (!config) {
@@ -160,12 +161,13 @@ export default function SearchView({
       max_score: ["100"],
       min_speed: ["1"],
       max_speed: ["150"],
+      identifier: allIdentifiers,
       has_clip: ["yes", "no"],
       has_snapshot: ["yes", "no"],
       ...(config?.plus?.enabled &&
         searchFilter?.has_snapshot && { is_submitted: ["yes", "no"] }),
     }),
-    [config, allLabels, allZones, allSubLabels, searchFilter],
+    [config, allLabels, allZones, allSubLabels, allIdentifiers, searchFilter],
   );
 
   // remove duplicate event ids