refactor: nav and search.

feat: use recoil to replace redux
feat: use react-native

THIS IS NOT FINISHED. DONT USE THIS

client/src/store/search.js

@@ -0,0 +1,25 @@
+import { atom, selector } from 'recoil';
+
+const isSearchEnabled = atom({
+  key: 'isSearchEnabled',
+  default: null
+});
+
+const searchQuery = atom({
+  key: 'searchQuery',
+  default: ''
+});
+
+const isSearching = selector({
+  key: 'isSearching',
+  get: ({ get }) => {
+    const data = get(searchQuery);
+    return !!data;
+  }
+});
+
+export default {
+  isSearchEnabled,
+  isSearching,
+  searchQuery
+};