Allow retaring the FT sensor from the teleop subcomponent

[amalnanavati]

Describe this pull request. Link to relevant GitHub issues, if any.

Sometimes, if the user is teleoperating the robot over a large trajectory, the F/T sensor will trip because it has moved too much since re-taring. As of now, there is no way to perform that re-taring in the web app. This PR addresses that by adding a button to the TeleopSubcomponent, always accessible through the Info modal, that allows users to re-tare the force-torque sensor.

Explain how this pull request was tested, including but not limited to the below checkmarks.

• Launch the system in --sim mock.
• Go into the Info modal. Verify the re-tare button exists.
• Click the re-tare button. Go to screen -r ft. Verify the request to re-tare was received.

Future Work

Consider whether to add this to the customization pages as well.

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[amalnanavati]

Also tested in real.