AutoComplete: add a value slot (like in DropDown)

[Azoorb]

Currently it is impossible to change a value title (visible text, that user will see when value is selected) via slots unlike DropDown (link)

Is your feature request related to a problem?
I know that i can pass a function into optionLabel prop, but what if i would like to use more complex markup than just text?
Other slots (e.g. option) doesn't have impact when value is selected and pop-up dialog is closed

Describe the solution you'd like
Add value slot like in DropDown component (link)

Describe alternatives you have considered
Alternatively, I can use DropDown with editable text

(from primefaces/primevue#4465)