New "NBA 2027 (3-2-1)" draft type

Since the NBA has released the final details of their new lottery system (AKA the "3-2-1 lottery"), I have added it to BBGM. You can select it in any league by changing the "Draft Type" setting to "NBA 2027 (3-2-1)". It is also the default in new random players leagues, and in new real players leagues once you sim to 2027. The headline feature of the 3-2-1 lottery is that all of the lottery picks…