Add CLI

Similar API as icat-tools

icat-store-raw --beamline ID00 \
    --proposal ID001234 \
    --sample FeCo2 \
    --dataset FeCO2_30 \
    --path /data/visitor/id00/id001234/FeCo2/FeCO2_30
    --metadata /path/to/file.json
    --url ...
    -p FIELD1=VALUE1
    -p FIELD2=VALUE2

Same API for processed data, except for the references to raw dataset paths (at least one is required)

icat-store-processed ... \
    --raw /data/visitor/id00/id001234/FeCo2/FeCO2_30
    --raw /data/visitor/id00/id001234/FeCo2/FeCO2_31