refactor(quadriga.metadata): move Start/End markers to extract whole admonitions for learning objectives (#301)

feat: update metadata for release

feat: update README to link to the new manual

feat(content): remove unnecessary content that is now in the manual

feat(content): create small setup for the template

fix: remove empty lines from lernziele points (#295)

fix: wrong fix with formatting

[Automated] Update metadata files

fix: correct name of the uni babelsberg

feat: add zenodo doi for qa concept document

feat: add the quality assurance checklist

fix: preserve assessment sub-fields for learning objectives entries

fix: allow for learning-outcomes in filename for Lernziele

feat(quadriga.metadata): set up local cacheing of the quadriga-schema

feat(quadriga.metadata): explicitly use v1 in schema validation script