URL编码解码

输入文本：

支持URL、查询参数、特殊字符等

编码示例：
https://example.com/search?q=测试&page=1 → https%3A%2F%2Fexample.com%2Fsearch%3Fq%3D%E6%B5%8B%E8%AF%95%26page%3D1

解码示例：
https%3A%2F%2Fexample.com%2Fsearch%3Fq%3D%E6%B5%8B%E8%AF%95%26page%3D1 → https://example.com/search?q=测试&page=1