Feature Request - add onAsyncLoad prop to async select

[wdfinch]

Hi there, so I have an async select compont and I would like to call a function after my loadOptions function has been completed. Right now I don't see a way to do this. Therefore I would like to propose adding an onAsyncLoad prop that calls a function when the loadOptions function has completed.

[Rall3n]

Depending on what you want to do, this can already be easily achieved.

There is not much the Async component does after calling the loadOptions prop besides setting internal states. So you can either run something before you call the callback, or add a .finally() handler if you use a Promise.