Autocomplete: add hideOnSelect property

[bogdan0083]

Right now it's impossible to prevent listbox from hiding when option is selected. I want to be able to leave it open when option is selected and hide it on escape keydown or when clicked outside. Here's an example gif of new property (just a prototype):

We can introduce hideOnSelect prop which will be true by default. But when it's set to false the listbox will not be hidden on option select.

I can send PR if you interested in this feature.

[graviteski]

@bogdan0083 This is exactly the functionality that we are looking for. When dealing with many multiple selections from a long list of items, this will save our users many clicks and a great deal of frustration if we can prevent the listbox from hiding between clicks.

Very keen to have this feature made available.

[bogdan0083]

Hi @graviteski ! I finally found a time to implement this feature: primefaces/primevue#5665

Please let me know if something can be improved in terms of code or documentation.