plugins: make _typeId, _typeEnum, _mpxType into get functions
plugins: make _typeId, _typeEnum, _mpxType into get functions

assumptionsoup/pymel,leonsooi/pymel,juggernate/pymel,leonsooi/pymel,juggernate/pymel,AtonLerin/pymel,AtonLerin/pymel,assumptionsoup/pymel,david-lassonde-adsk/pymel,shrtcww/pymel,david-lassonde-adsk/pymel,shrtcww/pymel