Move CMAKE_INSTALL_INCLUDEDIR after inclusion of GNUInstallDirs

This MR implements two small fixes for the CoMISo CMakeLists :

• Before inclusion of GNUInstallDirs, CMAKE_INSTALL_INCLUDEDIR is empty so the command target_include_directories does not include the right directory.

• When CoMISo is part of a larger project, we do not want to move the config file to the general binary directory, but the one specific to CoMISo, namely the CMAKE_CURRENT_BINARY_DIR

merged

mentioned in commit fba5e448

Thanks for the fix.