ENH: Add separate getter for devices, too

...om/caosdb-server/scripting/bin/crawl_sample_data_async.py

...server/scripting/bin/sample_helpers/default_constants.yml

...in/sample_helpers/sample_upload_add_special_properties.py

...ng/bin/sample_helpers/sample_upload_column_definitions.py

.../scripting/bin/sample_helpers/sample_upload_get_device.py

...r/scripting/bin/sample_helpers/sample_upload_get_event.py

...ustom/caosdb-server/scripting/bin/sample_helpers/utils.py

...ent-custom/caosdb-server/scripting/home/identifiables.yml