sample stage opi: show soft limits

[rerpha]

As a user I would like the sample stage OPI to show soft limits of the motor it's controlling. This is because if they are set narrow a user might not necessarily know that their motor has hit a soft limit and that's why it won't move.

acceptance criteria

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