* docs: implemented python script to convert local documentation from .md files to .html files
* docs: filled index.md; reviewed all references in .md files
* docs: updated Embedded.md and resized carp_on_arduboy.jpg to sensible width
* docs: copy sub folders (./docs/core and ./docs/sdl) to ./docs-html/ and refer docu to it
* docs: phrased requirements more clearly
* docs: generate docs for Standard libraries before converting .md docs to .html
* docs: change index to markdown lists
* docs: index.md worked around limitation in md converter
* docs: removed modules count from Libraries.md
Co-authored-by: guberatsie <gunnar.bernhardt@siemens.com>
