[netcore3] Update various native DLL references/PInvokes/Build steps to use T4 templates to generate binary names

Currently, native binaries need many changes when their names change. This includes PInvokes, def files, SxS manifest files, and so on.

All of these should be updated so that they are automatically generated based on the current suffix and the set DLL prefix name for that DLL. This ensures that if we change the suffix, all appropriate changes in the code base are automatic and complete.