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/assets/images/README.md

@@ -0,0 +1,25 @@
+<!--
+SPDX-FileCopyrightText: Contributors to the Shapeshifter project
+
+SPDX-License-Identifier: Apache-2.0
+-->
+
+# Images
+
+This folder contains images used in the documentation.
+
+## EMF files
+
+Many images originate from the original USEF specification created in Microsoft Word.
+During the migration to Markdown based documentation these images have been exported to EMF (Enhanced Windows Metafile) files.
+To convert these images to open standards, they have been opened in LibreOffice Draw and saved as ODG files, as well as being exported to SVG files.
+Although SVG files work well for the web-based documentation, some show up with wrong fonts and black elements in the PDF export.
+Therefore the SVG files have been exported to rendered PNG files for final use.
+
+### Rendering PNG files
+
+The PNG files have been generated from the SVG files using Inkscape on the Bash commandline:
+
+```
+# for IMG in $(ls *.svg); do inkscape ${IMG} -o ${IMG}.png --export-dpi=150; done
+```