IIIF Image API v3.0 Worker

Endpoints:
- GET /iiif/3/{identifier}/info.json
  Returns IIIF Image Information for an asset

- GET /iiif/3/{identifier}/{region}/{size}/{rotation}/{quality}.{format}
  Returns transformed image according to IIIF parameters

Identifier format: {policy_id}:{asset_name}

Examples:
- /iiif/3/policy123:asset456/info.json
- /iiif/3/policy123:asset456/full/256,/0/default.webp
- /iiif/3/policy123:asset456/0,0,512,512/,512/90/gray.png

Parameters:
- region: full | x,y,w,h | pct:x,y,w,h | square
- size: max | ^max | w, | ,h | pct:n | w,h | ^w,h
- rotation: n | !n (mirror + rotate)
- quality: default | color | gray | bitonal
- format: jpg | png | webp

Compliance: Level 2
Max dimensions: 4096x4096