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/HardwareDrivers/PowerMeters/DZG_GSH01/slip_protocol.hpp

@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2020 - 2025 Pionix GmbH and Contributors to EVerest
+
+/*
+ This is an implementation for the SLIP serial protocol
+*/
+#ifndef SLIP_PROTOCOL
+#define SLIP_PROTOCOL
+
+#include <cstdint>
+#include <everest/crc/crc.hpp>
+#include <everest/logging.hpp>
+
+namespace slip_protocol {
+
+constexpr int SLIP_START_END_FRAME = 0xC0;
+constexpr int SLIP_BROADCAST_ADDR = 0xFF;
+
+constexpr std::uint16_t SLIP_SIZE_ON_ERROR = 1;
+
+constexpr std::int8_t SLIP_ERROR_SIZE_ERROR = -1;
+constexpr std::int8_t SLIP_ERROR_MALFORMED = -2;
+constexpr std::int8_t SLIP_ERROR_CRC_MISMATCH = -3;
+
+enum class SlipReturnStatus : std::int8_t {
+    SLIP_ERROR_CRC_MISMATCH = -3,
+    SLIP_ERROR_MALFORMED = -2,
+    SLIP_ERROR_SIZE_ERROR = -1,
+    SLIP_OK = 0,
+    SLIP_ERROR_UNINITIALIZED = 1
+};
+
+class SlipProtocol {
+public:
+    std::vector<std::uint8_t> package_single(std::uint8_t address, std::vector<std::uint8_t>& payload);
+    std::vector<std::uint8_t> package_multi(std::uint8_t address,
+                                            const std::vector<std::vector<std::uint8_t>>& multi_payload);
+
+    SlipReturnStatus unpack(std::vector<std::uint8_t>& message, std::uint8_t listen_to_address);
+    auto get_message_counter() const {
+        return message_counter;
+    }
+    std::vector<std::uint8_t> retrieve_single_message();
+
+private:
+    std::vector<std::vector<std::uint8_t>> message_queue;
+    std::uint8_t message_counter{0};
+};
+
+} // namespace slip_protocol
+#endif // SLIP_PROTOCOL