Added LLM, HLM to motor_control.opi referenced to :LLM, :HLM

[advait-nair-ral]

Description of work

All motors now have lower and upper limit displayed below the existing motor controls. They reference $(P)$(NAME):LLM, $(P)$(NAME):HLM respectively.

Ticket

ISISComputingGroup/IBEX#8889

Acceptance criteria

• sample stage OPI shows soft limits (LLM, HLM on the motor record) of the motors shown on the OPI.

Unit tests

N/A

System tests

N/A

Documentation

N/A

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Code Review

• Is the code of an acceptable quality?
• If the change is to an OPI, does the check_opi_format.py script in C:\Instrument\Dev\ibex_gui\base\uk.ac.stfc.isis.ibex.opis pass?
• Do the changes function as described and is it robust?
• Is there associated PR for the release notes?

Final Steps

• Reviewer has also merged the release notes