Modernize ControllerOutdoorAir API

Enhancement Request

• Most of the getters in ControllerOutdoorAir are still named "getXxxx()" inside of "xxxx()"
• It uses optional for return types of the getters when there are defaults, and there isn't a isXXXdefaulted
• It's missing static methods to find valid values for choice fields "EconomizerControlType" and "LockoutType" and "Minimum Limit Type" and "Heat Recovery Bypass Control Type"

Detailed description

example:

https://github.com/NREL/OpenStudio/blob/1b8f0d3549d67f5e461677439ee85c5d6f6cad0c/src/model/ControllerOutdoorAir.hpp#L126-L127

  A17, \field High Humidity Control
       \note Optional field to enable modified outdoor air flow rates based on zone relative humidity.
       \note Select Yes to modify outdoor air flow rate based on a zone humidistat.
       \note Select No to disable this feature.
       \note If the field Economizer Control Type = NoEconomizer, then this option is disabled.
       \type choice
       \default No
       \key Yes
       \key No

Start with src/model/ControllerOutdoorAir.hpp, particularly the linked getter declarations and the four named choice fields. Review the requested getter naming, default handling, and valid-value methods, then identify the complete affected API surface. Done means ControllerOutdoorAir exposes the requested modernized getters, default indicators, and valid-value methods for all four choice fields.