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/AST_DC650/serial_device.hpp

@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2020 - 2025 Pionix GmbH and Contributors to EVerest
+
+/*
+ This is an implementation for custom serial communications
+*/
+#ifndef SERIAL_DEVICE
+#define SERIAL_DEVICE
+
+#include <mutex>
+#include <optional>
+#include <string>
+#include <vector>
+
+namespace serial_device {
+
+constexpr int SERIAL_RX_INITIAL_TIMEOUT_MS = 500;
+constexpr int SERIAL_RX_WITHIN_MESSAGE_TIMEOUT_MS = 100;
+
+class SerialDevice {
+
+public:
+    SerialDevice() = default;
+    SerialDevice(const SerialDevice&) = delete;
+    SerialDevice(SerialDevice&&) = delete;
+    SerialDevice& operator=(const SerialDevice&) = delete;
+    SerialDevice& operator=(SerialDevice&&) = delete;
+    ~SerialDevice();
+
+    bool open_device(const std::string& device, int baud, bool ignore_echo);
+    void tx(const std::vector<std::uint8_t>& request);
+    int rx(std::vector<std::uint8_t>& rxbuf, std::optional<int> initial_timeout_ms,
+           std::optional<int> in_msg_timeout_ms);
+
+private:
+    // Serial interface
+    int fd{0};
+    bool ignore_echo{false};
+
+    std::mutex serial_mutex;
+};
+
+} // namespace serial_device
+#endif // SERIAL_DEVICE