Query NFTs by Authority

[giorgionocera]

In the nft module it could be useful to query the nfts by authority, similarly to how it could be done with the collections. Moreover, it could be useful to paginate the results (since they can become a large number).

Do you agree?

[ryusmo]

Yea, I agree on adding paginations for queries. I think we already have querying nfts by owner. bitsongd query nft nfts-by-owner [owner]

[giorgionocera]

Nice! With respect to the owner and authority they are different attributes. So we could think to add the authority (which is who has the ability to modify the metadata) query. What do you think about it?

[angelorc]

The pagination is already integrated in the grpc query, howver I think we should set a new index on the store

[angelorc]

This feature could be handled by an offchain indexer (for example subquery network).