Draft: move libflib_dpb.so to install dir

libflib_dpb.so is present in build directory but not moved to install directory. Therefore reconstruction macro is crashed at this line https://git.cbm.gsi.de/computing/cbmroot/-/blob/master/macro/run/run_reco.C#L207 with such en error:

cling::DynamicLibraryManager::loadLibrary(): libflib_dpb.so: cannot open shared object file: No such file or directory

Error in TInterpreter::TCling::AutoLoad: failure loading library libCbmEventBuilder.so for CbmBuildEventsIdeal

external/flib_dpb/CMakeLists.txt

@@ -11,3 +11,6 @@ set(LIB_HEADERS flib_dpb/MicrosliceContents.hpp)
 add_Library(flib_dpb SHARED ${LIB_SOURCES} ${LIB_HEADERS})
 target_include_directories(flib_dpb PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/flib_dpb)
 Set_Target_Properties(flib_dpb PROPERTIES  SUFFIX ".so")
+
+install(TARGETS flib_dpb EXPORT flib_dpbTargets
+        LIBRARY DESTINATION lib)