Create a CRC Protocol

[ghost]

Create a protocol that will:
Fill a named CRC field, or append a crc to the raw data on write
Verify a CRC field, and optionally strip it on read
Support dropping a packet with bad CRC with a log message, or disconnecting the interface on bad CRC

Something like:
PROTOCOL READ_WRITE CrcProtocol <ItemNameToFill> <CRC bit offset> <CRC Bit size> <CRC Poly> <CRC Seed> <CRC XOR> <CRC Reflect> <AppendRemoveCRC> <BadCRCStrategy>