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/docs/diagrams/use-case-3-10-exchange-of-flexorder.puml

@@ -0,0 +1,20 @@
+@startuml
+!theme cerulean
+
+participant AGR
+participant DSO
+
+loop for each available FlexOffer to be accepted
+    AGR <- DSO: FlexOrder
+    AGR --> DSO: HTTP OK
+
+    alt if FlexOrder is valid
+        AGR -> DSO: FlexOrderResponse Result=Accepted
+        AGR <-- DSO: HTTP OK
+    else
+        AGR -> DSO: FlexOrderResponse Result=Rejected
+        AGR <-- DSO: HTTP OK
+    end
+end
+
+@enduml