Cleanup PUBLIC and PRIVATE link dependencies

[traversaro]

At the moment, the libraries installed by diagnostic-daemon link all their dependency without any specifier (see

diagnostic-daemon/src/diagnosticdaemoncore/CMakeLists.txt

Line 46 in 74accf2

target_link_libraries(${PROJECT_NAME} ${Common_LIBRARIES}

), that means that all those libraries are linked as PRIVATE . However, libraries that are used in the public headers of the library (such as Boost, see

diagnostic-daemon/src/diagnosticdaemoncore/ComponentUdp.h

Line 14 in 74accf2

#define BOOST_ERROR_CODE_HEADER_ONLY

) should be linked as PUBLIC dependencies, as they also need to be linked by downstream binaries that link to the library.