Autocomplete attribute should be more complex

[wadouk]

Autocomplete attribute is a boolean but in the spec there is an longer enum.

Do you think this enum should be hardcoded or should be free to dev ?

[evancz]

I was only aware of the "on" and "off" options when I chose the Bool argument.

I'm not sure when we can expand the API there, but It should be possible to use property "autocomplete" "..." in the meantime.

[prikhi]

I threw something together for the elm-community/html-extra package. The available values are based off of the WhatWG spec:

https://package.elm-lang.org/packages/elm-community/html-extra/latest/Html-Attributes-Autocomplete

https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#autofill