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/yocto/kirkstone/meta-everest/classes/everest.bbclass

@@ -0,0 +1,5 @@
+# EVerest variable defaults
+
+EVEREST_VERSION_FILE ?= "${sysconfdir}/everest/everest_version"
+EVEREST_RELEASE_FILE ?= "${sysconfdir}/everest/everest_release.json"
+EVEREST_RELEASE_PACKAGES ?= ""