Ensure we provide sufficient metadata structure to be able to provide data availability statement

Came up in scientific core meeting 20240819 , there might be desire to provide a full "data availability" statement to be pasted from DLP which would not only be the reference to the dandiset, but providing additional background (grants information etc).

Example statement from NeMO

> Example dataset citation for NeMO to include in the data availability statement or methods: In this study, we used raw sequence data produced as part of the National Institutes of Health’s Brain Research Through Advancing Innovative Neurotechnologies® (NIH BRAIN) Initiative Cell Atlas Network (BICAN; RRID:SCR_022794, brain-bican.org) by Velmeshev and Kriegstein (2021)* accessed through the Neuroscience Multi-omics Archive Archive (NeMO; RRID:SCR_016152, https://nemoarchive.org/) under accession number: nemo:dat-b3brzfa. Data may be accessed at: https://assets.nemoarchive.org/dat-b3brzfa.

which seems that we have most but not necessarily all metadata fields:
- [x] grants
- [ ] Larger initiative/program (E.g. NIH BRAIN) which the following (grant(s)) are under
- [x] DOI/permalink to access
- [ ] RRID -- we have one for DANDI and otherwise need to provide branding/vendoring yet (#76)