Encoder: Remove LED indicators for quadrature state.
RTC: Interrupt support.
UI: Add RTC interrupt to update date/time when second increments.
RTC: Remove NVIC code.
Add RI timer API.
UI: Use RI timer to create 1kHz encoder update rate.
IPC: Add M0 command called when RTC second increments.
UI: Use RTC command sent from interrupt to update on-screen time.