Merge branch 'f-consolidation' into f-consolidate-c

.clang-format

.gitlab-ci.yml

CHANGELOG.md

README_SETUP.md

README_SETUP.md

doc/CMakeLists.txt

doc/Examples.rst

doc/README_SETUP.md

doc/conf.py.in

doc/index.rst.in

doc/requirements.txt

include/caosdb/authentication.h

include/caosdb/configuration.h

include/caosdb/connection.h

include/caosdb/data_type.h

include/caosdb/entity.h

include/caosdb/exceptions.h

include/caosdb/file_transmission/download_request_handler.h

...e/caosdb/file_transmission/register_file_upload_handler.h

include/caosdb/file_transmission/upload_request_handler.h