[SYSID] [Motor Test] add dshot telemetry support for motor_test

[Li-Jinjie]

What is this

Add a feature to motor_test, which can record dshot telemetry data now. Tested using beetle_art.

Details

Example Usage:

roslaunch motor_test test.launch force_sensor:=PFS055YA501U6 min_pwm_value:=1000 max_pwm_value:=1100 pwm_incremental_value:=50 has_dshot_telemetry:=true

Note that if you are using an external spinal to test the motor, please uncomment these code in test.launch:

<!--  <include file="$(find rosserial_server)/launch/serial.launch" >-->
<!--    <arg name="port" value="/dev/ttyUSB0" />-->
<!--    <arg name="baud" value="921600" />-->
<!--  </include>-->