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/shapeshifter-library-python-main/docs/source/api/clients.rst

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+Client API Reference
+====================
+
+You can use any of the four prepared clients to communicate to services of the other parties.
+
+.. automodule:: shapeshifter_uftp.client
+   :exclude-members: ShapeshifterClient

tools/shapeshifter-library-python-main/docs/source/api/index.rst

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+API Reference
+=============
+
+This is the low-level API reference.
+
+.. toctree::
+   :maxdepth: 2
+   :caption: API Reference:
+
+   clients
+   services
+   types
+   transport

tools/shapeshifter-library-python-main/docs/source/api/services.rst

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+Service API Reference
+=====================
+
+The servers listen for request from other clients.
+
+.. automodule:: shapeshifter_uftp.service.agr_service
+.. automodule:: shapeshifter_uftp.service.dso_service
+.. automodule:: shapeshifter_uftp.service.cro_service

tools/shapeshifter-library-python-main/docs/source/api/transport.rst

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+Transport API Reference
+=======================
+
+Low-level transport details for sealing and unsealing messages
+
+.. automodule:: shapeshifter_uftp.transport
+

tools/shapeshifter-library-python-main/docs/source/api/types.rst

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+Types API Reference
+===================
+
+These objects correspond directly to the UFTP objects that are sent across the wire. You will encounter these in the messages and response when using Shapeshifter UFTP.
+
+.. automodule:: shapeshifter_uftp.uftp.common
+.. automodule:: shapeshifter_uftp.uftp.agr_cro
+.. automodule:: shapeshifter_uftp.uftp.agr_dso
+.. automodule:: shapeshifter_uftp.uftp.cro_dso
+.. automodule:: shapeshifter_uftp.uftp.metering