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/API/RpcApi/rpc/RequestHandlerInterface.hpp

@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright chargebyte GmbH and Contributors to EVerest
+#ifndef REQUEST_HANDLER_INTERFACE_HPP
+#define REQUEST_HANDLER_INTERFACE_HPP
+
+#include <optional>
+
+#include <types/json_rpc_api/json_rpc_api.hpp>
+
+namespace RPCDataTypes = types::json_rpc_api;
+
+namespace request_interface {
+
+// --- RequestHandlerInterface ---
+// This interface is used to handle synchronous requests from the RPC API.
+class RequestHandlerInterface {
+public:
+    virtual ~RequestHandlerInterface() = default;
+    virtual RPCDataTypes::ErrorResObj set_charging_allowed(const int32_t evse_index, bool charging_allowed) = 0;
+    virtual RPCDataTypes::ErrorResObj set_ac_charging(const int32_t evse_index, bool charging_allowed, bool max_current,
+                                                      std::optional<int> phase_count) = 0;
+    virtual RPCDataTypes::ErrorResObj set_ac_charging_current(const int32_t evse_index, float max_current) = 0;
+    virtual RPCDataTypes::ErrorResObj set_ac_charging_phase_count(const int32_t evse_index, int phase_count) = 0;
+    virtual RPCDataTypes::ErrorResObj set_dc_charging(const int32_t evse_index, bool charging_allowed,
+                                                      float max_power) = 0;
+    virtual RPCDataTypes::ErrorResObj set_dc_charging_power(const int32_t evse_index, float max_power) = 0;
+    virtual RPCDataTypes::ErrorResObj enable_connector(const int32_t evse_index, int connector_id, bool enable,
+                                                       int priority) = 0;
+};
+
+} // namespace request_interface
+
+#endif // REQUEST_HANDLER_INTERFACE_HPP