Add HCS schemas to the GH pages publication script

[sbesson]

See ome/ome-zarr-py#142 (comment)

[will-moore]

Changes look good. I'm assuming that the schemas aren't actually deployed to https://ngff.openmicroscopy.org/0.4/schemas/plate.schema and https://ngff.openmicroscopy.org/0.4/schemas/well.schema until after this is merged?

[sbesson]

That's correct. Ideally this could be replaced by wilcard to copy everything under /schemas for each version but my attempts have failed so that's the easiest way to publish things

[will-moore]

OK, LGTM 👍

[sbesson]

Re-executed https://github.com/ome/ngff/actions/runs/2611161053 which in turn updated the GitHub Pages. The schemas should now be available live

[joshmoore]

👍 We probably need to document all the steps for adding a schema somewhere.

[sbesson]

Agreed. Thoughts about https://github.com/ome/ngff#release-process or a separate section?

[joshmoore]

Starting there probably makes sense. Eventually, I'd imagine a how to as part of the spec itself concerning the process, etc. But that needs a good deal of drafting.