[Request]: Share URL on web

### Plugin

share_plus

### Use case

I tried to use this plugin to share a link from a website, and there is no way to do that. You can only share a text, and the system would not know how to share that. So I instead had to use this

```dart
html.window.navigator.share({
'title': 'Share Character',
'url': '${Uri.base.scheme}://${Uri.base.authority}/#/character/${controller.character!.id}',
});
```
Since the plugin only shares files or text

### Proposal

Adding a way to share link and not just text or file, something like the `html.window.navigator.share({})`