feat: Possibility to await a slash command and display a loading spinner?

[mikealche]

Describe the feature you'd like to request

Hey everybody! Thank you very much for this beautiful project!

It'd be an amazing feature if one could await the slash command completion feature (say you need to call an API) before instantly closing the menu. Ideally maybe one could also display a loading spinner icon instead of the regular icon of the suggestionItem in

Again, thank you very much for this great project