[Feature request] Support for select/unselect all

[tonoslav]

Above all values some

• (un)check all (with custom text possible for both)

[BusinessDuck]

Now "select" contains "option" and "label" components. The probloem, which you describe, may be solved by add decompose "optionWrapper" component. If you can do it, you're welcome.

Take a look at option component and do the optionWrapper same as option. Will be great.

If i will doing it, i cant promise complete this fast. I'am hardworker.

[BusinessDuck]

When we got optionWrapper as extendable component, you can add (un)select all button in option list.