User stories and/or base use cases

[JulieWinchester]

Taken from @azaroth42's IIIF/api#1992, with some updates.

Requirement: Documentation enumerating base use cases and relevant user stories for use of 3D in IIIF.

Rationale: IIIF process is based around use cases. We need to know what we're trying to do, before trying to do it :)

Status: Some required use cases are listed at https://github.com/IIIF/iiif-3d-stories/issues. Additionally, the 3D Community Group has previously used a Google Form to collect user stories from the community. A summary of this process and results were described as part of the 3D Community Group update at the IIIF Fall Working Meeting 2020, and a log of the responses has been uploaded.

Next Steps:

• Evaluate the use cases currently in the iiif-3d-stories GitHub to verify all should remain there, and then rephrase remaining use cases as user stories
• User stories from the Google From log should be reviewed and appropriate stories should be contributed to the iiif-3d-stories GitHub
• At some point the group should determine via community consensus when enough stories have been gathered to draw an "initial scope" for the 3D TSG work

[JulieWinchester]

Can this issue be closed?