added fluid flow toggle

src/utils/hooks/usePersistedState.ts

@@ -0,0 +1,19 @@
+import { useEffect, useMemo, useState } from 'react';
+
+export const usePersistedState = (key: string, initial: string): [string, (val: string) => any] => {
+  const stored = useMemo(() => {
+    try {
+      return localStorage.getItem(`vault_${key}`) || initial;
+    } catch (e) {
+      return initial;
+    }
+  }, [key]);
+
+  const [val, setVal] = useState<string>(stored);
+
+  useEffect(() => {
+    localStorage.setItem(`vault_${key}`, val);
+  }, [val]);
+
+  return [val, setVal];
+};