updating config instructions for koch 1v1 motors

[mogar]

What this does

Updates to configure_motor.py script and example 7 to provide correct motor configuration of dynamixels in a Koch 1v1 robot.

Example 7 now refers to the updated motor configuration script. Prior to this it referred to an outdated method of automatically running the configuration on connection.

The script to configure the motor now only sends Lock commands if the motor is a feetech, otherwise it skips the Lock.

How it was tested

I built my own Koch 1v1 and configured it using the above changes. Motors all took the updated baud rate and ID properly. Follower/leader motors work correctly.

How to checkout & try? (for the reviewer)

Follow the updated instructions in examples/7_get_started_with_real_robot.md to configure a Koch 1v1 from scratch.

If you have a dynamixel disconnected from any robot, you could also just run something like this:

python lerobot/scripts/configure_motor.py \
  --port /dev/tty.usbmodem58760432961 \
  --brand dynamixel \
  --model xl330-m288 \
  --baudrate 1000000 \
  --ID 2

Update the model and port according to your setup first.

[Cadene]

Thanks!