dev2: update resave

[joshmoore]

• [x] include tensorstore metrics
• [x] read/write shard sizes from/to file
• [x] re-format with ruff
• [x] introduce status bar for HCS case with tqdm
• [x] optionally output ro-crate-metadata.json (requires #9)
• [x] optionally output convert.sh using zarrs (requires #7)

cc: @will-moore @dominikl @sherwoodf @LDeakin

[joshmoore]

Merging after today's first challenge session. Next steps include:

• deploy on pypi as "ome2024-ngff-challenge" (rather than "resave.py")
• re-add the shard & chunk flags
• parameterize ro-crate info (@sherwoodf)