multiscene: Parse csv exported from BFF

[toloudis]

Use Case

Allow BFF to determine multiscene collection to load in VolE.

Solution

Get some example data from Antoine.
Use BFF to export CSV.
Load CSV into app, each row is one scene. Use File Path column as zarr source and all other columns as metadata entries per scene.
For prototyping, this could be drag n drop or a new (maybe temporary) url parameter.

[ShrimpCryptid]

Some reference code here in CFE that also parses BFF files: https://github.com/allen-cell-animated/cell-feature-explorer/blob/main/src/state/image-dataset/csv-dataset/index.ts

[toloudis]

Implementation strategy:
At csv export time, BFF can create an iframe and load a stub page from the VolE domain (vole.allencell.org or whatever).
Then we can postmessage from bff into the iframe, with the contents of the csv data.
Then the vole stub page can use local storage to save the data.
Then BFF can launch VolE in a new tab, and hand it an id that lets it load the same data from local storage, and clean it up if needed.

The reason for the iframe is that localstorage reads and writes have to have same origin...