add CMake CMP0058 policy to quench Ninja-related warning
add CMake CMP0058 policy to quench Ninja-related warning

wjakob/tbb,wjakob/tbb,wjakob/tbb,wjakob/tbb,Formlabs/tbb,Formlabs/tbb,Formlabs/tbb,Formlabs/tbb,wjakob/tbb,wjakob/tbb,wjakob/tbb,Formlabs/tbb,Formlabs/tbb,Formlabs/tbb