MAINT: Rename Exceptions to Errors

examples/set_permissions.py

src/caosdb/common/administration.py

src/caosdb/common/models.py

src/caosdb/connection/authentication/auth_token.py

src/caosdb/connection/authentication/interface.py

src/caosdb/connection/authentication/keyring.py

src/caosdb/connection/authentication/pass.py

src/caosdb/connection/authentication/unauthenticated.py

src/caosdb/connection/connection.py

src/caosdb/exceptions.py

src/caosdb/utils/caosdb_admin.py

unittests/test_authentication_auth_token.py

unittests/test_authentication_unauthenticated.py

unittests/test_connection.py

unittests/test_connection_utils.py

unittests/test_error_handling.py