Feature/update documentation

Update documentation

• use rst files instead of markdown
• no more autodoc2, fully replaced with autodoc
• updated the documentation, so less output from Vale or Sphinx (warning-wise)

docs/.gitlab-ci.yml

@@ -7,7 +7,7 @@ build-documentation:
   image: sphinxdoc/sphinx:latest
 
   before_script:
-    - pip install sphinx_rtd_theme sphinx-autodoc2 myst-parser
+    - pip install sphinx_rtd_theme sphinxcontrib-jquery
     - cd $CI_PROJECT_DIR/docs/source
   script:
     - make html