DBSRV: Stop get_sample_parameter getting its information from the database instead make it static on load

As a developer I would like get_sample_parameters not to get the names of the parameters from the database but from a static pv served by the dae_ioc (where the rest of the parameters are served from). This is so that if the database goes down it will still work and there is less load on the database.

### Acceptance Criteria

- get_sample_pars (and similar) do not get the names from the database
- the isis_dae exposes all pvs it has

### Notes

- Current code sits in the DBSRV it jsonises and compresses the names this might not be necessary to do if it is hard.
- pvs are in `...\EPICS\support\isisdae\master\isisdaeApp\Db`