Split traits into: rpc, control, peripheral-traits

[rrbutani]

what

lc3-traits has grown pretty large; unlike all of our other crates it's hard to describe exactly what it does, concisely. I think it's time to split it up into:

• lc3-peripheral-traits: traits/src/peripherals/*, traits/src/memory.rs, traits/src/control/metadata.rs, and traits/src/error.rs
• lc3-control: traits/src/control/*.rs
• lc3-rpc: traits/src/control/rpc/*.rs

Alternatively we can just leave control where it is and just spin off rpc into it's own crate. This may make more sense.

steps

where

branch: imp/trait-crate-split

open questions

Haven't completely thought this through but I don't think coherence gets in our way here.