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/modules/EVSE/EvseManager/v2gMessage.hpp

@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright Pionix GmbH and Contributors to EVerest
+#ifndef V2G_MESSAGE_HPP
+#define V2G_MESSAGE_HPP
+
+#include <nlohmann/json.hpp>
+#include <pugixml.hpp>
+#include <string>
+
+namespace module {
+/*
+ Simple V2G XML message helper
+*/
+
+class v2g_message {
+public:
+    v2g_message();
+    bool from_xml(const std::string& xml);
+    std::string to_xml();
+    void from_json(const std::string& json_str);
+    std::string to_json();
+
+private:
+    pugi::xml_document doc;
+    nlohmann::json j;
+};
+
+} // namespace module
+
+#endif // V2G_MESSAGE_HPP