ControllerMechanicalVentilation is missing options for the "System Outdoor Air Method" compared to E+

[jmarrec]

Enhancement Request

Missing these:

        \key IndoorAirQualityProcedureGenericContaminant
        \key IndoorAirQualityProcedureCombined
        \key ProportionalControlBasedOnDesignOARate

Additionally, it's time to remove "ProportionalControl", which has been there as a backward compatible mapping to "ProportionalControlBasedonOccupancySchedule" for at least 8 years: https://github.com/NREL/OpenStudio/commit/b1b6b6d9a56a674dcdadc97a8b67393c3c188579

Detailed Description

OpenStudio

https://github.com/NREL/OpenStudio/blob/55040fb543628bcbeff73532d488d6ad8ba968ee/resources/model/OpenStudio.idd#L21445-L21453

       \key ZoneSum
       \key Standard62.1VentilationRateProcedure
       \key Standard62.1VentilationRateProcedureWithLimit
       \key IndoorAirQualityProcedure
       \key ProportionalControl    -> maps to ProportionalControlBasedonOccupancySchedule in FT
       \key ProportionalControlBasedOnOccupancySchedule
       \key ProportionalControlBasedOnDesignOccupancy

E+

   A4,  \field System Outdoor Air Method
        \type choice
        \key ZoneSum
        \key Standard62.1VentilationRateProcedure
        \key Standard62.1VentilationRateProcedureWithLimit
        \key IndoorAirQualityProcedure
        \key ProportionalControlBasedOnDesignOccupancy
        \key ProportionalControlBasedOnOccupancySchedule
        \key IndoorAirQualityProcedureGenericContaminant
        \key IndoorAirQualityProcedureCombined
        \key ProportionalControlBasedOnDesignOARate
        \default Standard62.1VentilationRateProcedure

Possible Implementation

Found during review of a PR to OSApp that tries to align them: https://github.com/openstudiocoalition/OpenStudioApplication/pull/646#discussion_r1422211776