[Automation] Fin a way to support Sluice "auto" mode

[ihsoft]

Multiple requests have been raised about setting "auto" mode from the scripts. In the current implementation, sluices are attached to the Switch automation component, which only allows on/off. making a special behavior for sluice only won;t be a scalable solution (no support for the possible modded buildings).

Option. Add a third state to the Switch component: "default". The regular switches will have it bound to "on" or "off", but things like a sluice can defalt to the "auto" mode. Not a perfect solution, but it may work.

[kmcbride3]

There's a SluiceState component with the following properties:

AutoMode (bool)
AutoCloseOnAbove (bool)
AutoCloseOnBelow (bool)
AutoCloseOnOutflow (bool)
IsOpen (bool)
IsSynchronized (bool)
OnAboveLimit (float)
OnBelowLimit (float)
OutflowLimit (float)

Which appear to correspond with the Sluice Automation options (Auto, Close above contamination, Close below contamination, Close above downstream depth).