Add Select() method to HTMLInputElement.

- According to https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement, it has that method, just like https://developer.mozilla.org/en-US/docs/Web/API/HTMLTextAreaElement does (which this package already supports).
- Note that HTMLInputElement and HTMLTextAreaElement share many other common methods like CheckValidity, SetCustomValidity, SetSelectionRange, but this package only supports the latter.
- Tested and it works in latest stable Chrome.