Julabo water bath - add two commands to IOC and controls to OPI

# Feature Description

As an instrument scientist or user, I would like to be able to read and write two additional parameters via the Julabo IOC and OPI. Controlling them remotely would make it more convenient to use the waterbath as well as provide additional diagnostic data.

## Explanation

During an experiment on NIMROD, it was discovered that the "Xpu" and "cospeed" parameters were not available remotely, and had to be set manually via the physical control panel on the bath. Had they been available, it would have saved time and effort while diagnosing a problem with setting control parameters.

### Additional Information

- `Xpu` and `cospeed` are the names of the parameters given by the instrument scientist from the names used in the menus of the physical control panel. They have not been verified by checking in the manual(s).
- Several models of Julabo waterbath exist, and so any changes will have to be supported by each model.
- There are manuals for the various models in the usual area of the group network share.

_{See our [Git Workflow](https://isiscomputinggroup.github.io/ibex_developers_manual/processes/git_and_github/Git-workflow.html).}

## Acceptance Criteria
- Additional parameters are added to the IOC and displayed on/controlled by the OPI
- All IBEX-supported models of Julabo waterbath are covered (providing that the requested commands are present in their protocols)

_{**To the reviewer: Make sure to [update submodules](https://isiscomputinggroup.github.io/ibex_developers_manual/processes/git_and_github/Git-workflow.html)!**}

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Discussed Planning 08/01/2026 15:33

Comience localizando las implementaciones de IOC y OPI de Julabo y las definiciones de protocolo para cada modelo compatible con IBEX. Consulte los manuales disponibles de los baños de agua para verificar los nombres de los comandos Xpu y cospeed y la compatibilidad de los modelos. Se considera terminado cuando ambos parámetros se pueden leer y escribir a través del IOC, mostrar y controlar en la OPI, y son compatibles en todos los lugares donde los protocolos del modelo los proporcionen.

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