Implement PDU 24A

[bjackson312006]

…in monitor.c

Changes

• Added current sensing to pdu.c
• Added sending of current data via CAN in monitor.c

Notes

I had to fix some mistakes in the INA226 driver in Embedded Base before I could get Cerberus to build

To Do

Any remaining things that need to get done

• Rest of ticket
• Correct any mistakes

Checklist

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Closes #205