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/Misc/SerialCommHub/crc16.hpp

@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright Pionix GmbH and Contributors to EVerest
+#ifndef CRC16_HPP
+#define CRC16_HPP
+#include <stdint.h>
+
+uint16_t calculate_modbus_crc16(const uint8_t* buf, int len);
+#endif