The Great Refactor

There's been an overhaul both visible and behind the scenes, along with support for a new cart, the DSTT!

One major change:

You must now select your cart before continuing to Dump/Inject/Restore

Unfortunately, carts don't seem to like it when you send random commands without regard to what they support. Makes automatic detection of the cart infeasible.

Changelog:

• DSTT Support has been added (not all of them, unfortunately)
• Menu highlighting!
• Progress bars!

Known Bug:

The progress bar percentages updates over top of itself without erasing, meaning that the numbers will probably become unreadable at some point. Didn't have time to fix this tonight, but we wanted to get proper DSTT support out ASAP.