refactor: nav and search.

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

THIS IS NOT FINISHED. DONT USE THIS

client/src/store/conversations.js

@@ -0,0 +1,27 @@
+import React from "react";
+import {
+  RecoilRoot,
+  atom,
+  selector,
+  useRecoilState,
+  useRecoilValue,
+  useSetRecoilState,
+} from "recoil";
+
+const refreshConversationsHint = atom({
+  key: "refreshConversationsHint",
+  default: 1,
+});
+
+const useConversations = () => {
+  const setRefreshConversationsHint = useSetRecoilState(
+    refreshConversationsHint
+  );
+
+  const refreshConversations = () =>
+    setRefreshConversationsHint((prevState) => prevState + 1);
+
+  return { refreshConversations };
+};
+
+export default { refreshConversationsHint, useConversations };