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/helpers/tests/CMakeLists.txt

@@ -0,0 +1,17 @@
+set(TEST_TARGET_NAME ${PROJECT_NAME}_helpers_tests)
+
+add_executable(${TEST_TARGET_NAME}
+helpers_test.cpp
+)
+
+target_link_libraries(${TEST_TARGET_NAME}
+    PRIVATE
+        GTest::gmock_main
+        GTest::gtest_main
+        everest::helpers
+)
+
+include(GoogleTest)
+gtest_discover_tests(${TEST_TARGET_NAME})
+
+ev_register_test_target(${TEST_TARGET_NAME})