Add extra modifies for F1/F4

[tznind]

@tznind when do you intend to add support to these combinations? With NetDriver all the combinations with the F1 is possible as you can see in the image.

        // Function keys with modifiers
        /*  Not currently supported
        yield return new object [] { "\u001b[1;2P", Key.F1.WithShift };
        yield return new object [] { "\u001b[1;3Q", Key.F2.WithAlt };
        yield return new object [] { "\u001b[1;5R", Key.F3.WithCtrl };
        */

Originally posted by @BDisp in #4193 (comment)