More work on message system for rendering, sound, and input

README.md

lib/interpreter.rs

lib/interpreter/input_sender.rs

lib/interpreter/peripherals.rs

lib/interpreter/peripherals/bios.rs

lib/interpreter/peripherals/io.rs

lib/interpreter/peripherals/rom_bios.rs

lib/interpreter/render_reciever.rs

lib/interpreter/sound_reciever.rs

src/gui.rs