Enabling automatic document creating with pandoc requires a different folder layout, so we can separate sources files, tools, configs, etc. This PR prepares the repository for further pandoc integration.

TODO:

• Improve spell checking
  • Better spelling error reporting (users want to see file/line numbers)
  • Do we need two different spelling exclude lists?
  • Fix wrong spell checking error
• Test deployment
• Fix hard coded source detection
• Unify multiple places where we lookup/compute the document version
• Regenerate and check tools (old folder)
• Update skeleton to MD table format
• Generate include parts for main.md
• Setup CI for tool unittests

Future TODOs:

• Refactor preprocessor stage into main generator
  • Refactor code
  • Write tests
• Refactor building of knowledge_areas section
  • Refactor code
  • Write tests

Pandoc ob ubuntu-20.04 seems to have a bug when rendering one of our topcs. However, misspelling the section works.