Creator info

[will-moore]

Fixes #16

This adds _creator info e.g.

"_creator": {
        "name": "ome2024-ngff-challenge",
        "version": "0.0.5.post1.dev0+924ff0a"
      },

to image.zarr/zarr.json and to plate.zarr/zarr.json.

NB: if you have installed ome2024-ngff-challenge with pip install -e . then the version given above will return the commit at the install time and it doesn't track subsequent commits/branch that you change to.

[joshmoore]

At least two other possibilities occur to me:

• also define this in the RO-Crate
• only define this in the RO-Crate

cc: @sherwoodf

Getting this in since for human-readability it's definitely better to have it somewhere ASAP. @will-moore, I assume you'll need to add this to your labels PR (#29) as well.