RCS Control Algorithm

[Esouder]

In order to do RCS, we have to have some sort of control algorithm that takes the data from the IMU (angular acceleration, probably) and controls the RCS valves to manage the rocket roll rate.

A couple quick thoughts as I write this:

• the data that the RCS system consumes from the IMU will likely not need to be processed by the kalman filter, so no worries there.
• This will also need to control the valves, so some research into that will be necessary

If there ends up being a document for research or planning or something, please link it in this issue.