2022-03-02 (W) RemoteFinishLine Light animations

The testing rig I used placed the screen upside-down and reading it wasn't always convenient. I planted to start work on the Bluetooth links, but I decided to hold back and work on the light ring. At a glance, I should know if the device had just started up, errored out, was looking for a start signal, or if a race was complete. I can add new functions later, such as pairing wirelessly or searching for a start line. When a racer finishes, four lights travel around, analogous to a black-and-white checkered flag. The pattern of green lights moving in a "landing strip" indicates the finish line. There is a red ring to show a bogus distance reading.
Landing lights and rotation

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