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/lib/everest/io/CMakeLists.txt

@@ -0,0 +1,17 @@
+option(BUILD_DOC "Build documentation" OFF)
+option(BUILD_EXAMPLES "Build examples" OFF)
+option(EVEREST_IO_WITH_MQTT "Build MQTT (mosquitto) support in everest::io" ON)
+
+add_subdirectory(src)
+
+if (BUILD_TESTING)
+    add_subdirectory(test)
+endif()
+
+if (BUILD_DOC)
+  add_subdirectory(docs)
+endif()
+
+if (BUILD_EXAMPLES)
+  add_subdirectory(examples)
+endif()