add configuration manager

.docker/Dockerfile

CMakeLists.txt

README_SETUP.md

caosdb-client-configuration-schema.json

conanfile.py

doc/CMakeLists.txt

doc/capi/index.rst.in

doc/conf.py.in

doc/cppapi/index.rst.in

doc/index.rst.in

doc/requirements.txt

include/CMakeLists.txt

include/caosdb/authentication.h

include/caosdb/configuration.h

include/caosdb/connection.h

include/caosdb/constants.h.in

include/caosdb/exceptions.h

include/caosdb/utility.h

include/ccaosdb.h

requirements.txt