[suggestion] Features for at.dialog to provide better UI / more information

[ducky7788]

1. Option for dialog button to align itself to left / middle / right (or even set the position, where user can define how many pixels or distance from the left-most-edge ).

2. Ability to allow 2 or more buttons to be arranged on the same row.

3. A '?' or '!' mark near each controls of the dialog which I can pre-define a simple description so that user will understand what are the functions of these buttons.