Create IIIF Collections POST

[JackLewis-digirati]

Update existing Create endpoint to support creating IIIF Collections

part 1:

https://deploy-preview-3--dlcs-docs.netlify.app/api-doc/iiif#example-create-a-iiif-collection-within-a-storage-collection

see #28

• addition to POST endpoint /{customer id}/collections
• IIIF Collections do not contain the "storage-collection" behavior (see iiif-behaviors)
• still requires data added to the database but IsStorageCollection = false
• JSON document needs to be saved to S3
• Any valid IIIF collection can be saved
• slug and parent properties are required
• retrieved document should be equivalent to saved
• the ID field should be the same as generated by the ID

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old:

Now we need to start writing JSON to S3

And possibly manipulating it

Public view, header view

Flat view, hierarchical view, redirects

Edit random JSON properties (e.g., add some metadata, add a provider) and see them persisted

Return ETag in header (no edits yet though)