Fix for WACK. Move CoCreateInstanceFromApp to winmd

In order to pass the Windows Application Certification Kit checks,
CoCreateInstanceFromApp has to be called from inside a Windows Runtime
Component (.winmd). This changes creates a sub-assembly specifically for
splat-wpa81 that meets this requirement
Burn the NativeMethods stuff altogether
Completely burn the NativeMethods stuff altogether
Version bump to 1.5.1
Move platforms to the top
Document images
Document Service Location
Document Logging