added file CaptureMediaStreamSink.h back into project
minor cleanup
added project reference from CaptureBasic sample to CaptureMediaSink (temporary)
build/deploy settings updated
CaptureMediaSink now instantiates CaptureStreamSink properly
CaptureStreamSink interface stubs implemented based on system IDL
minor cleanup
WinRT call to StartRecordToCustomSinkAsync working properly with CaptureMediaSink passed in