support Cellular Tracking Technologies LifeTag motus adapter

[jbrzusto]

• similar to the Cornell xcvr dongle
• presents as USB device: 10c4:ea60 Cygnal Integrated Products, Inc. CP210x UART Bridge / myAVR mySmartUSB light, so distinguishable from Cornell xcvr, which also has different output format
• UART settings: stty 115200 raw
• output format: CRLF-terminated lines of the form XXXXXXXX,-YY where:
  • X are hex digits giving tag ID
  • Yare decimal digits giving signal strength (dB ?) I can't tell whether YY is always 2 digits, so assume not.

[jbrzusto]

• test shows signal strength can have 3 digits, e.g. -106

[jbrzusto]

maybe also create new plugin to detect tags, as per this plot obtained via rtlsdr: