Implement the metadata authoring forms based on supported metadata models

[newgene]

Based on the output from #29, build an interactive form user can edit their dataset metadata.

Some design considerations:

• Shared metadata fields between models should be able to transfer.
• Separate minimally required and additional metadata fields.
• Use some visual indications for metadata completeness (e.g. progress bar)
• Specify the benefits of the additional metadata fields