Expand file types supported for IIIF image delivery

[eporter23]

Is your feature request related to new functionality not yet included in the product? Please describe. Our IIIF server currently supports a limited range of image file types, but we have discovered its current configuration does not support JP2. Additionally, we can't currently render PDF files in the Universal Viewer.

Is your feature request related to a problem or a change to existing functionality? Please describe. A clear and concise description of what the problem is. Ex. It is very difficult to [...] because [...]

Describe the solution you'd like A clear and concise description of what you want to happen.

• Investigate options and documentation for Cantaloupe IIIF server configurations to enable additional file types
• If successful, implement changes to support these JP2 and PDF files

Describe alternatives you've considered A clear and concise description of any alternative solutions or workarounds you've considered.

• Status quo: JP2 images do not render when a user encounters them
• Generate page-level images from PDF files and ingest them, simply for display purposes

How will this impact users? A clear and concise description of how many and which types of users would benefit from this feature, or any who may be negatively impacted by the change.

• Many users would benefit from being able to preview pages of a PDF (especially for upcoming work for OpenEmory)
• Users who want to interact with material digitized as JP2 would also benefit from these rendering in IIIF viewers

Additional context Add any other context or screenshots about the feature request here.

See documentation and examples from other institutions configurations of Cantaloupe in the Curate ticket.

[eporter23]

Support for JPEG 2000 images was completed on 7/14/22. The PDF investigation will be moved to a separate request, because our current IIIF manifest building process excludes PDFs as image content.