Unify driver protobuf protocol to SolarXR

[ImUrX]

We kinda have 2 different schemas currently being used, this needs an overhaul.

• Figure out how the whole protocol should look in flatbuffer
• Use only unix sockets in all OS for the driver IPC (supported since Insider Build 17063 on Windows 10)
• Work out if any extra is needed for Monado to have an easy time using this

Stuff that needs to be thought of:

• Because we are gonna still use sockets/pipes, we should use TCP directly, it will make everything easier by making sure messages are in order (which should still happen in UDP tbh) and take care of the concept of a "connection" which UDP doesn't have. The current implementation in Linux is TCP, so it won't require much change.