Add ability to set title of choices in dropdown (for tooltip functionality)

[m4xxed]

Is your feature request related to a problem? Please describe.

I often have the situation where options in the dropdown menu are too large to be fully seen and the area in which options differ is outside of the visible area. In this case, it would be nice to have a tooltip on mouse-hover, both for the options and the selected option if the dropdown is not active.

Describe the solution you'd like

Add an optional "title" attribute to the InputChoice interface which will be set as the title of the element.

Describe alternatives you've considered

I have considered adding the title attribute to each element after initializing the Choice object, therefore having the tooltip available.