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/applications/pionix_chargebridge/src/plc_bridge.cpp

@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2020 - 2025 Pionix GmbH and Contributors to EVerest
+#include <charge_bridge/plc_bridge.hpp>
+#include <charge_bridge/utilities/logging.hpp>
+#include <everest/io/event/fd_event_handler.hpp>
+#include <everest/io/udp/udp_payload.hpp>
+#include <iostream>
+
+namespace {
+const int default_udp_timeout_ms = 1000;
+} // namespace
+
+namespace charge_bridge {
+
+plc_bridge::plc_bridge(plc_bridge_config const& config) :
+    m_tap(config.plc_tap, config.plc_ip, config.plc_netmaks, config.plc_mtu),
+    m_udp(config.cb_remote, config.cb_port, default_udp_timeout_ms) {
+    using namespace std::chrono_literals;
+    m_timer.set_timeout(5s);
+
+    m_tap.set_rx_handler([this](auto const& data, auto&) {
+        everest::lib::io::udp::udp_payload pl;
+        pl.buffer = data;
+        m_udp.tx(pl);
+    });
+
+    m_udp.set_rx_handler([this](auto const& data, auto&) { m_tap.tx(data.buffer); });
+
+    auto identifier = config.cb + "/" + config.item;
+    m_tap.set_error_handler([this, identifier](auto id, auto const& msg) {
+        utilities::print_error(identifier, "PLC/TAP", id) << msg << std::endl;
+        m_tap_on_error = id not_eq 0;
+    });
+
+    m_udp.set_error_handler([this, identifier](auto id, auto const& msg) {
+        utilities::print_error(identifier, "PLC/UDP", id) << msg << std::endl;
+        m_udp_on_error = id not_eq 0;
+    });
+}
+
+void plc_bridge::handle_timer_event() {
+    if (m_udp_on_error) {
+        m_udp.reset();
+    }
+    if (m_tap_on_error) {
+        m_tap.reset();
+    }
+}
+
+bool plc_bridge::register_events(everest::lib::io::event::fd_event_handler& handler) {
+    auto result = true;
+    result = handler.register_event_handler(&m_tap) && result;
+    result = handler.register_event_handler(&m_udp) && result;
+    result = handler.register_event_handler(&m_timer, [this](auto) { handle_timer_event(); }) && result;
+    return result;
+}
+
+bool plc_bridge::unregister_events(everest::lib::io::event::fd_event_handler& handler) {
+    auto result = true;
+    result = handler.unregister_event_handler(&m_tap) && result;
+    result = handler.unregister_event_handler(&m_udp) && result;
+    result = handler.unregister_event_handler(&m_timer) && result;
+    return result;
+}
+
+} // namespace charge_bridge