Console + code viewer + fixes

[pineman]

• redesign debug panel
• initial console - with rudimentary d disasm command
• removes the fpt-cli crate (sorry @joajfreitas 😞) - as we've been talking about, the debugger should be integrated in the gameboy/cpu and not in a different crate which controls it. egui is our main gameboy client now. some code will be reused (and already has been, like disasm) but lots won't
• code viewer - mnemonics and args of all instructions that were actually ran
• tweak core emulator loop to allow breakpoints
• fix tetris jumping to bootrom (RST 0x28) - properly unload the bootrom (we forgot)

[diogotito]

Everything seems fine.
Just look at my comment in fpt/src/lr35902.rs line 1666.