[FEATURE] Image analysis job

[aaronleopold]

Add a new job that analyzes archive, image-based media to determine the image dimensions for each page. This is separate from the scanner so it can be opt-in if you want the functionality.

• Analysis should write media metadata pages field with result
• If the media already has pages metadata set, validate with the new result
  • Potentially in the future support writing the XML directly

See Discord request for full context of this request

[JMicheli]

What else needs to be done in order to close this issue? I'd like to see closing this and #180 through.

[aaronleopold]

What else needs to be done in order to close this issue? I'd like to see closing this and #180 through.

I actually think both can be closed out! I'll double check tomorrow though, in case I'm missing something, and can close them out afterwards

[aaronleopold]

Implemented by #307