Add output spin state to sample log in PolarizationCorrectionWildes

[rbauststfc]

Part of #36685.

It would be good to optionally add the spin state to the sample log for the output workspaces in PolarizationCorrectionWildes. This will provide a reliable way of identifying the spin state of a workspace, which will make it easy to include this metadata in reduced data files. This has been requested by the ISIS Reflectometry Group and they have asked that we use the ORSO notation in the log. See linked issue for more details.

We should implement the following:

• The log name should be spin_state_ORSO. I think this might be better than just spin_state because there seem to be a lot of different notations in use, so this makes it clear which one we're using.
• PolarizationCorrectionWildes should expose a new parameter AddSpinStateToLog that defaults to False to maintain backwards compatibility. This means that users can choose whether to have the spin state log added. This new parameter would need to be exposed through PolarizationEfficiencyCor.
• For PA, the output workspaces should be labelled as follows:
  • ++ = pp
  • +- = pm
  • -+ = mp
  • -- = mm
• For PNR, the output workspaces should be labelled as follows:
  • ++ = po
  • -- = mo