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-specification-main/README.md

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+<!--
+SPDX-FileCopyrightText: 2020-2023 Contributors to the Shapeshifter project
+
+SPDX-License-Identifier: Apache-2.0
+-->
+
+# UFTP
+## USEF Flex Trading Protocol
+
+## INTELLECTUAL PROPERTY DISCLAIMER 
+
+The XSDs are provided to you “as is” with no warranties whatsoever, including any warranty of merchantability, non-infringement, or fitness 
+for any particular purpose. The authors of the XSDs disclaim all liability, including liability for infringement of any 
+proprietary rights, relating to use or implementation of information in the XSDs.  
+
+The provision of the XSDs to you does not provide you with any license, express or implied, by estoppel or  
+otherwise, to any intellectual property rights. 
+
+## USEF Flex Trading Protocol 
+
+The Universal Smart Energy Framework (USEF) has been developed to drive a fast, fair and lowest cost route to an integrated smart energy 
+future. By delivering one common standard, it enables cost-efficient connectivity of all smart energy projects and technologies. Its 
+market structure, roles, rules and tools for the commoditization and trading of flexible energy usage work with existing energy markets.  
+
+The USEF Flex Trading protocol (UFTP) is a subset of the USEF framework. Focused specifically on the exchange of flexibility between 
+Aggregators (AGRs) and DSOs, it describes the corresponding market interactions between them to resolve grid constraints by applying 
+congestion management or grid-capacity management. UFTP can be used as a stand-alone protocol for flexibility forecasting, offering, 
+ordering, and settlement processes. 
+
+UFTP and the USEF Framework are developed, maintained and audited by the USEF Foundation.
+
+The directory name of each set of XSDs refer to the corresponding version of USEF Flexibility Trading Protocol Specifications as published
+by the [USEF Foundation](https://www.usef.energy/).