Feature to sync the time from the roboRIO or other device by default

[AustinShalit]

@calcmogul

would be neat if frcvision had a mechanism for syncing the RIO and rpi clocks

NTP is a thing, but idk how to set up a custom client and make the RIO a server

anyway, if we had that, I suggest sending the rpi clock as the timestamp of the vision data. then you wouldn't have to measure pipeline latency, network latency, or anything