[Feature Request] Add textarea support

[Tam]

Being able to use textareas in place of inputs would be really useful, especially where multi-line values are a possibility.

[darrenjennings]

Looked into it a bit, textarea works just fine if you're ok with the suggestion box below the entire textarea - but another component would need to be used if you wanted a typeahead dropdown in-line with the text itself.

For how to implement this in the library, we could use <component :is="inputProps.is", which seems to work from a functional perspective, but breaks the tests and I noticed some weird behavior with the @selected events not firing. PR's welcome if someone would like to take this task.

[damirbogdanov]

might be helpful for someone

• Dynamic input with component doesn't update UI vuejs/vue#10290 (comment)