.ozx technology compatibility kit

[clbarnes]

Suggested by @joshmoore

A repo with scripts for generating various valid, invalid, and not-recommended .ozx files and potentially a tool for distinguishing between them.

Valid cases

• [ ] Single array
• [ ] Group hierarchy

Warning cases

• [ ] Missing ZIP comment metadata
• [ ] Not using ZIP64
• [ ] zarr.json file entries not sorted breadth-first
• [ ] Ends with .zip
• [ ] Uses zip compression

Failure cases

• [ ] No zarr.json at the root
• [ ] .ozx file contained in archive
• [ ] multi-part zip
• [ ] ZIP comment suggests zarr.json entries are sorted, but they're not

[clbarnes]

https://github.com/clbarnes/ozx-tck

[joshmoore]

cc: @jwindhager @mkitti @normanrz @thewtex