Finalize an initial EMBER Project metadata schema

Note: this can (and likely will) change over time, but we wan to get as close as possible with this initial implementation based on our current requirements and understanding of the space

Considerations

• Integration with DANDI metadata & schema
• Integration with data standards that store metadata
  • NWB, BIDS, Pysch-DS (do they all store metadata?)
• Reducing duplicated metadata
  • If data is already stored somewhere, we may or may not need it in the EMBER metadata
  • We may (and plan to?) be able to pull existing metadata from other resources integrated into EMBER. For example the DANDI API

related: https://github.com/aplbrain/BBQS-EMBER-Data-Model