Clean-up ariakit/combobox and InlineCombobox

[cloverich]

Added this to support #223 but when I cleaned up drop downs (#237 ) I didn't have enough time to do this work. I think rather than having an additional library, better to go all in on radix and build this internally, especially since #234 implements a similar pattern. Most important is to use the same styling tailwind classes as the other menu's, so theming / style changes are easy.

Choices here are probably:

• Keep ariakit if it seems stable long-term
• Move to a more established library like cmdk
• In-house it