[Draft] Adds Nominatum search behind a feature flag (#935)

* Add intial search component

* Add nominatum simple

* Connect search field to Nominatum API

- remove react-query
- remove react-query logic from J40Map
- move searchHandler to MapSearch

* Adjust zoom and territory focus

- adjust zoom buttons in CSS to allow for search field

* Place search behind a feature flag

* Add cors to fetch and error handling

- this is to test on OMB machines

* Add error messaging and bound search results to US

- adjust controls to add error message to search
- add MapSearchMessage component for error message
- add unit tests
- add state to track if API results are empty
- add intl on two strings, placeholder and error message

* Remove warpper around MapSearch component

- reorder component import in J40Map
- remove unused CSS in MapSearch.module.scss
- remove and comment on wrapper error on MapSearch
- rename isSearchEmpty to isSearchResultsEmpty
- update snapshot

* Add error message

- if the search query returns null, show an error message

client/src/components/MapSearchMessage/MapSearchMessage.tsx

@@ -0,0 +1,21 @@
+import React from 'react';
+import {useIntl} from 'gatsby-plugin-intl';
+
+import * as EXPLORE_COPY from '../../data/copy/explore';
+import * as styles from './MapSearchMessage.module.scss';
+
+interface ISearchMessage {
+    isSearchResultsNull: boolean;
+};
+
+const MapSearchMessage = ({isSearchResultsNull}:ISearchMessage) => {
+  const intl = useIntl();
+
+  return (
+    <div className={isSearchResultsNull ? styles.showMessage : styles.hideMessage}>
+      {intl.formatMessage(EXPLORE_COPY.MAP.SEARCH_RESULTS_EMPTY_MESSAGE)}
+    </div>
+  );
+};
+
+export default MapSearchMessage;