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/v2/getting_started.md

@@ -0,0 +1,13 @@
+# Getting Started with OCPP2.0.1
+
+## Integrate this library with your Charging Station Implementation for OCPP2.0.1
+
+OCPP is a protocol that affects, controls and monitors many areas of a charging station's operation.
+
+If you want to integrate this library with your charging station implementation, you have to register a couple of **callbacks** and integrate **event handlers**. This is necessary for the library to interact with your charging station according to the requirements of OCPP.
+
+Libocpp needs registered **callbacks** in order to execute control commands defined within OCPP (e.g ResetRequest or RemoteStartTransactionRequest)
+
+The implementation must call **event handlers** of libocpp so that the library can track the state of the charging station and trigger OCPP messages accordingly (e.g. MeterValuesRequest , StatusNotificationRequest)
+
+Your reference within libocpp to interact is a single instance to the class ocpp::v2::ChargePoint defined in `v2/charge_point.hpp` for OCPP 2.0.1.