The `link` helper does not accept `options`

Nobody has claimed this yet.

Unlike all other tag helpers, the `link` helper doesn't accept `options`. So you can't to do something like:

```crystal
link "Something", to: Something::Index, options: aria_current(Something::Index)

private def aria_current(path)
return {} of String => String unless current_page?(path)

{"aria-current" => "page"}
end
```

because this is such a common use case, I've also been thinking about an additional helper to simplify this:

```crystal
link_with_aria, to: Something::Index
```

But perhaps that a step too far.

Start by locating the `link` helper and comparing its signature with the other tag helpers that accept options. Verify the expected options shape from those helpers, then make the shown `options: aria_current(...)` call work. Done means link attributes can be supplied through options while normal link generation still works.

Written by the indexing model from the issue text.