Map and store piece CID -> blob CID + location(s) when a new aggregate is received #15
Description
Alter Spade to map and store piece CID -> blob CID + location(s) when it receives a new aggregate.
When the Storacha Filecoin pipeline has successfuly created an aggregate Spade is informed (actually this is a pull).
When Spade finds out about a new aggregate, it should resolve the piece CIDs to blob CIDs (equivalency claims) by asking the indexing service. In doing so it'll also find out the location commitments. This information should be cached until no longer needed.