[BUG] BUILD_SHARED_LIBS=OFF disables all building of CUVS

[robertmaynard]

Describe the bug
If BUILD_SHARED_LIBS is set to off no part of cuvs is built at all.

Steps/Code to reproduce bug
cmake -S <cuvs/cpp> -B <build_dir> -DBUILD_SHARED_LIBS=OFF

Expected behavior
The static components of cuvs should be built

Additional context
This looks to be caused by #368