stretch_feetech_monitor shows the feetechs are disconnected when they are not

[hello-robot-shehab]

With SBS running, stretch_feetech_monitor shows that the feetechs are offline. We should probably make it not work if the server is active. Also should we rename this to be an REx_ tool instead of a stretch_ tool?

For use with S T R E T C H (R) from Hello Robot Inc.

Opening port /dev/hello-feetech-wrist...
Connecting to motors...

Starting monitor (Ctrl-C to exit)...
Monitoring Feetech Motors on /dev/hello-feetech-wrist (baud 1000000)
ID | Temp(C) | Pos | Voltage(V) | Load(%) | Error

20 | Error | - | - | - | Feetech Comm Error on /dev/hello-feetech-wrist ID 20. Attempted SMS_PRESENT_TEMP. Result COMM_RX_CORRUPT. Error 0. Total Errors 1.
21 | Error | - | - | - | Feetech Comm Error on /dev/hello-feetech-wrist ID 21. Attempted SMS_PRESENT_TEMP. Result COMM_RX_TIMEOUT. Error 0. Total Errors 1.
22 | Error | - | - | - | Feetech Comm Error on /dev/hello-feetech-wrist ID 22. Attempted SMS_PRESENT_TEMP. Result COMM_RX_TIMEOUT. Error 0. Total Errors 1.
23 | Error | - | - | - | Feetech Comm Error on /dev/hello-feetech-wrist ID 23. Attempted SMS_PRESENT_TEMP. Result COMM_RX_CORRUPT. Error 0. Total Errors 1.