ENH: Propagate CMAKE_CONFIGURATION_TYPES to all external projects
ENH: Propagate CMAKE_CONFIGURATION_TYPES to all external projects

This allows to configure CTK and all dependent projects so that only
configuration is presented to the user.

This can be done by explicitly settings -DCMAKE_CONFIGURATION_TYPES:STRING=Release

SINTEFMedtek/CTK,CJGoch/CTK,commontk/CTK,SINTEFMedtek/CTK,CJGoch/CTK,SINTEFMedtek/CTK,commontk/CTK,commontk/CTK,CJGoch/CTK,SINTEFMedtek/CTK,CJGoch/CTK,SINTEFMedtek/CTK,CJGoch/CTK,commontk/CTK