Enable MemberImportVisibility in the CMake build

Forgot to enable this upcoming feature when I added it to the Package manifest.

Author: ahoppen

CMakeLists.txt

@@ -12,7 +12,7 @@ set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
 
-add_compile_options("$<$<COMPILE_LANGUAGE:Swift>:SHELL:-enable-upcoming-feature InternalImportsByDefault>")
+add_compile_options("$<$<COMPILE_LANGUAGE:Swift>:SHELL:-enable-upcoming-feature InternalImportsByDefault -enable-upcoming-feature MemberImportVisibility>")
 
 find_package(dispatch QUIET)
 find_package(Foundation QUIET)