fix: add "use client" directive for Next.js App Router compatibility

Resolves useState hook error when using HideMe component in Next.js apps

Author: LyesWeb

src/HideMe.tsx

@@ -1,3 +1,5 @@
+"use client";
+
 import React, { useState, useCallback, useMemo } from 'react';
 import classNames from 'classnames';
 import { HideMeProps } from './types';