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/include/charge_bridge/discovery.hpp

@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2020 - 2026 Pionix GmbH and Contributors to EVerest
+#pragma once
+
+#include <chrono>
+#include <everest/io/event/fd_event_register_interface.hpp>
+#include <everest/io/event/timer_fd.hpp>
+#include <everest/io/mdns/mdns.hpp>
+#include <everest/io/mdns/mdns_client.hpp>
+#include <functional>
+#include <memory>
+#include <set>
+
+namespace charge_bridge {
+
+enum class discovery_device_type {
+    CB_EVSE,
+    CB_EV
+};
+
+class discovery : public everest::lib::io::event::fd_event_register_interface {
+public:
+    using discovery_cb = std::function<void(std::string const&)>;
+
+    discovery(discovery_device_type type);
+    discovery(discovery_device_type type, std::set<std::string> const& interfaces, bool excluding);
+
+    bool register_events(everest::lib::io::event::fd_event_handler& handler) override;
+    bool unregister_events(everest::lib::io::event::fd_event_handler& handler) override;
+
+    void set_discovery_callback(discovery_cb const& cb);
+
+private:
+    void add_client(std::string const& interface);
+    void query_registry();
+
+    std::vector<std::unique_ptr<everest::lib::io::mdns::mdns_client>> m_mdns;
+    everest::lib::io::event::timer_fd m_timer;
+    discovery_cb m_on_discover;
+    everest::lib::io::mdns::mDNS_registry m_registry;
+    discovery_device_type m_type;
+    static const std::string discovery_id;
+};
+
+} // namespace charge_bridge