Optional
options: InputBoxOptionsConfigures the behavior of the input box.
Optional
token: CancellationTokenA token that can be used to signal cancellation.
A promise that resolves to a string the user provided or to undefined
in case of dismissal.
Opens an input box to ask the user for input.
The returned value will be
undefined
if the input box was canceled (e.g. pressing ESC). Otherwise the returned value will be the string typed by the user or an empty string if the user did not type anything but dismissed the input box with OK.