First menu action!

Clearly getting a little more comfortable with the ins and outs of C#. :)

There's still a lot to do (dealing with vertical and horizontal overflow, delay-then-scroll on holding up or down, getting this to generate function calls based on JSON from the server rather than the easy way with normal C# in particular), but the basics came together faster than I expected.

Mr. Death demonstrates invoking and backing out of a menu, then invoking it and making a selection, which results in an encouraging message.

There's a lot of hard-coded pixel offsets that I'm sure are going to make me cringe when I get around to nailing down client resolution, but... meh. It's just not a problem I want to address right now.