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/lib/everest/ocpp/doc/message_dispatching.md

@@ -0,0 +1,60 @@
+# Message Dispatching Class Diagram
+
+```mermaid
+classDiagram
+class MessageDispatcherInterface {
+    +dispatch_call(const json& call, bool triggered = false)
+    +dispatch_call_async(const json& call, bool triggered = false): std::future~EnhancedMessage~T~~
+    +dispatch_call_result(const json& call_result)
+    +dispatch_call_error(const json& call_error)
+}
+
+class v16_MessageDispatcher {
+    - MessageQueue& message_queue
+    - ChargePointConfiguration& configuration
+    - RegistrationStatus& registration_status
+}
+
+class v2_MessageDispatcher {
+    - MessageQueue& message_queue
+    - DeviceModelAbstract& device_model
+    - ConnectivityManager& connectivity_manager
+    - RegistrationStatusEnum& registration_status
+}
+
+class v2_MessageHandlerInterface {
+    +handle_message(EnhancedMessage~v2_MessageType~ message)
+}
+
+class v16_MessageHandlerInterface {
+    +handle_message(EnhancedMessage~v16_MessageType~ message)
+}
+
+class v2_DataTransferInterface {
+    +data_transfer_req(request: DataTransferRequest): std::optional~DataTransferResponse~
+    +handle_data_transfer_req(call: Call~DataTransferRequest~)
+}
+
+class v2_DataTransfer {
+    -MessageDispatcherInterface &message_dispatcher
+    -std::optional~function~ data_transfer_callback
+}
+
+class v2_ChargePoint {
+    std::unique_ptr~MessageDispatcherInterface~ message_dispatcher
+    std::unique_ptr~v2_DataTransferInterface~ data_transfer
+}
+
+class v16_ChargePoint {
+    std::unique_ptr~MessageDispatcherInterface~ message_dispatcher
+}
+
+MessageDispatcherInterface <|-- v16_MessageDispatcher  
+MessageDispatcherInterface <|-- v2_MessageDispatcher
+v2_DataTransferInterface <|-- v2_DataTransfer
+v2_MessageHandlerInterface <|-- v2_DataTransferInterface
+MessageDispatcherInterface *-- v2_DataTransfer
+MessageDispatcherInterface *-- v2_ChargePoint
+v2_DataTransferInterface *-- v2_ChargePoint
+MessageDispatcherInterface *-- v16_ChargePoint
+```