CCS - Less Flashing LEDs

[bill-luu]

Right now, every time the CCS receives a CAN message, the green LED will flash. We have a craaapton of messages, so to reduce the chances of the LEDs exploding, we should make it toggle instead only when it doesn't receive anything.

[ExtraGravity]

Not the easiest change. Maybe turn it on when it has received a message, and turn it off when it hasn't received a message in like 2 seconds or something.