[Feature Request] Autoselect props on VTextField and VNumberInput

[tidan-16]

Problem to solve

When there is already an existing value inside the textfield, it would be usefull to have an autoselect prop for selecting the whole value inside the textfield instead of only focusing it with autofocus.

Proposed solution

Add a prop named: autoselect. This props would select the input when the component is mounted. I would use the same behavior as autofocus, but select the input instead.

[MajesticPotatoe]

Would be likely more beneficial to have this onFocus than onMount (though could possibly make prop handle both instead of be a boolean, or make 2 props to handle it)

performing onMount would lose its use after something is clicked and not be able to be obtained again and seems kinda pointless outside a single input,
performing onFocus has UX benefits such as navigating forms without mouse, and can be combined with autofocus Example

onMount use case might be viable for a "select all" scenerio but probably better suited for v-form as more than 1 input cant be selected/focused at a time, and with v-form it might be viable to copy all inputs to a clipboard or perform a visual highlighting of some sort? Just some thoughts.

[KaelWD]

It is already possible to do this with @focus="$event.target.select()"