feat: add useInterval and useTimeout

[yuanyan]

Why useInterval? setInterval will called even component is unmounted that make error happens, and useInterval will auto clearInterval before component will mount.

import { createElement } from 'rax';
import useInterval from 'rax-use-interval';

function Example() {
  const [count, setCount] = useState(0);
  useInterval(() => {
    setCount(count + 1);
  }, 1000);

  return <h1>{count}</h1>;
}

[wssgcg1213]

其实这里可以不用判断, clearInterval 接受任何类型都不会抛出异常

[yuanyan]

1. 逻辑上正确 2. clearInterval 还是比较重的行为

[wssgcg1213]

同上

[wssgcg1213]

其它没有问题