refactor: new structure and nix

.envrc

.gitignore

.gitlab-ci.yml

.idea/.gitignore

.idea/aws.xml

.idea/misc.xml

.idea/modules.xml

.idea/runConfigurations/document___help.xml

.idea/runConfigurations/document_add.xml

.idea/runConfigurations/document_add___help.xml

.idea/runConfigurations/document_build.xml

.idea/runConfigurations/document_build_html.xml

.idea/runConfigurations/document_build_pdf.xml

...itlab_schukai_com_oss_utilities_documentation_manager.xml

.idea/runConfigurations/help.xml

.idea/runConfigurations/server.xml

.idea/runConfigurations/server_serve.xml

.idea/runConfigurations/version.xml

CHANGELOG.md

Makefile