Files Table: Add pinned state, deal state, and number of deals to the Files Table. Hide aggregate files from the table until a deal is made.

[neelvirdy]

@kelindi the hiding aggregates part is included in this estuary PR https://github.com/application-research/estuary/pull/631. just tagged you on that PR and will tag you on the estuary-www PR when i open it (currently in draft https://github.com/application-research/estuary-www/pull/117)