Newport single axis motion controller relative move with negative values

[rbudhrani]

Describe the bug The Newport single axis motion controller has a bug in its relative move command. it does not allow for negative displacement. It checks if the given displacement is less than the allowed minimum incremental motion of the actuator and fails because a negative displacement will always be lower than that value. Instead it must check against the absolute value of the provided displacement. https://github.com/QuTech-Delft/QMI/blob/4ec147fbb14203c3d8674f35b78be85cbd58bbf6/qmi/instruments/newport/single_axis_motion_controller.py#L490

To Reproduce

• Make/Get an instance of a Newport Conex CC controller.
• Run move_relative(-0.01)
• Instrument will raise an exception that -0.01 is less than the minimum incremental motion

Expected behavior

• The instrument should not raise an exception and should move the actuator by a negative value.

Screenshots

• to be added

Operating System (please complete the following information):

• OS: Linux
• Version: Bookworm
• Distribution: Debian

Additional context

• n/a