Not adding the repository as a remote simply makes it impossible to push
to it. Also this makes it mandatory to always fetch the changes from the
remote anyway since it is not locally mirrored.

add enable_latest_cxx_support.cmake and added a comment to enable_cxx11_support.cmake to no longer use is.

Ignore configuration files for Visual Studio Code.

also export the LIBRARY_DIRS variable to the calling CMakeLists.txt (needed to publish it to further downstream dependencies)

Fixed the confusing and inconsistently used names *_LINK_FLAGS and *_LINKER_FLAGS by always setting and getting both variables

added TINE_EXPORT C macro/constant to the compiler flags, which seens to be required for the latest DOOCS version

Added new `dapi` component in FindDOOCS.cmake module.

need to find DOOCS_DIR first, since this is the variable which might be specified at the cmake command line

removed already deprecated prepare_debian_package.cmake, which has just been added and will unnecessarily cause conflicts in the anyway deprecated way to create debian packages