Add ability to allow dropdown execution

[frroossst]

Most 215 assignment make heavy use of dropdown execution and control flow, add a toggle/ config to enable this. Shouldn't be too hard to implement

• at EndOfInstruction check if dropdown toggle is on,
• if on then find the next label in the Ordered Dictionary and jump to that

[frroossst]

Impl a PC, that updates with each instruction, on a EndOfInstruction increment PC by 4 and execute that label, this is pretty much the same as the above, but with an added Program Counter layer in between which'll allow for increased extensibility in the future

[frroossst]

In theory should just read the toml file and execute a dropdown here