Add extracted tools: CitrineOS, OpenOCPP, ShapeShifter

- CitrineOS core extracted (CSMS OCPP 2.0.1)
- OpenOCPP extracted (firmware OCPP 1.6J/2.0.1)
- ShapeShifter library installed (pip install -e)
- ShapeShifter specification extracted
- EVerest extracted

TODO updated with progress

tools/EVerest-main/cmake/CreateAuxSymlink.cmake

@@ -0,0 +1,24 @@
+list(APPEND AUX_DIRS interfaces)
+
+foreach(IT IN LISTS AUX_DIRS)
+    set(IT_DST "${CMAKE_INSTALL_PREFIX}/${IT}")
+
+    if(IS_DIRECTORY ${IT_DST} AND NOT IS_SYMLINK ${IT_DST})
+        message(
+            FATAL_ERROR "\
+I won't be able create the symlink, because the link target ${IT_DST} \
+already exists and I don't want to delete it.  Probably you executed \
+the INSTALL target already without symlinks.  Please remove the \
+directory manually.\
+"
+        )
+    endif()
+
+    install(
+        CODE "
+            execute_process(COMMAND cmake -E create_symlink
+                            ${CMAKE_CURRENT_SOURCE_DIR}/${IT}
+                            ${IT_DST})
+        "
+    )
+endforeach()