Use CMake support of FRAMEWORKs in WEBKIT_FRAMEWORK. * Use the FRAMEWORK properties https://cmake.org/cmake/help/latest/prop_tgt/FRAMEWORK.html * Use the PUBLIC_HEADER property https://cmake.org/cmake/help/latest/prop_tgt/PUBLIC_HEADER.html * Use the PRIVATE_HEADER property https://cmake.org/cmake/help/latest/prop_tgt/PRIVATE_HEADER.html Handle `-umbrella` framework which prevents WebCore from being linked directly.