Rework multiplayer menu to use Fez's built-in menu structures

[Jenna1337]

idk if this is possible, considering how the server list menu periodically live updates the menu items for LAN servers, but either way I'd like to wait for HAT to make adding menu options easier. As such, this is issue is currently blocked by FEZModding/HAT#12

[Jenna1337]

also while Fez's MenuLevel class suggests it supports scrolling up/down, they only use this feature on the Leaderboards menu, and I don't like how it works. It doesn't scroll very intuitively, and doesn't support mouse wheel. We might be able to make scrolling work by doing a detour of the MenuBase.DrawLevel method or doing something similar to CreditsMenuLevel. If we can't figure that out, we could continue using our custom menu for the main server list, and use the MenuLevel stuff for the server selected menu or something.