richer test suite
Updates imgui to have target ips and limits correctly.
Initial IPS = 1000, plan to expose to user
More tests for encode/decode of instructions
Adding text to instruction parsing
ComputerManager has a thread to run the CPU whenever its told to either
step or run. It can be told to stop the CPU too. Cycle count and keystate
feedback is available along with read-only of the computer from status()
Adds 'doom like' 3dviprmaze-vip for demo (VERY VERY SLOW)
updates egui interface to let user select from files in resources/roms
updates cargo to centralize dependencies
95 passing tests
