Add linkable support for firefly://data URIs

[awrichar]

We've been using/encouraging a pattern for NFT URIs that follows a URI scheme of firefly://data/<data-hash> to identify that the NFT metadata is contained in a private FireFly data item.

Assuming we do want to commit to this as a generally supported pattern, we could add link support in the UI (also assuming that token URIs continue to show up in more places), so that these links can be clicked to take you to the data item.

[ayush4345]

where you want this link to be added ?

I can work on this issue