adds methods for disabling the default VIM mappings and setting your own

[vesper8]

example usage:

        $menu = (new CliMenuBuilder)
        ->addItem('Print A', function () { echo 'A'; })
        ->build();

        $menu->disableDefaultControlMappings();

        $menu->open();

        $menu = (new CliMenuBuilder)
        ->addItem('Print A', function () { echo 'A'; })
        ->build();

        $defaultControlMappings = [
            'a' => InputCharacter::LEFT,
            's' => InputCharacter::DOWN,
            'w' => InputCharacter::UP,
            'd' => InputCharacter::RIGHT,
        ];

        $menu->setDefaultControlMappings($defaultControlMappings);

        $menu->open();

[Lynesth]

To be honest I don't really care about the VIM mapping and even think we could simply remove those by defaults.

[mikeymike]

@Lynesth removal at this point would be a BC, maybe something we can consider when we're closer to another major version ?

[AydinHassan]

Thanks @vesper8 ! docs would be appreciated 😁