Remote control protocol

[max1220]

I'd like to suggest a feature.

I would like a remote control protocol for plots, where users can
read/write/observe block using a TCP client(somewhat like RCON, but for
redstone/block changes, not chat commands).

This feature would be cool for all sorts of hacks.
You could easily create external memory(which is what I desperately want this for),
external high-res displays, a real-world internet connection for a Minecraft build, etc.
The idea is that you can easily interface a Minecraft build with an external program.

Some thought should also be put into a useful, high-performance capable protocol,
and how multiple connections are handled, specifically how to build a protocol that doesn't
miss block changes, but delays the main plot thread as little as possible.
Also pausing, single-stepping etc. from external commands could be useful in all sorts of other
debugging and peripheral scenarios.

I also have a (somewhat) working prototype, but it's very bad as this is my first time using Rust.

https://github.com/max1220/MCHPRS-RSC

I'll try to come up with a better implementation, but this would be a great feature "upstream", and I'm really out of my depth as a first-time Rust user with all this multi-threaded Rust code.