Investigate best approach for storing zk circuits

A zk circuit can be up to 50 MB. Developers have told us that they don't know whether they should be bundling these files with their snap (would make install slow) or if they should download these files separately, and how they should go about storing them. What is the best approach within the Snaps environment?

Start by reviewing the Snaps environment constraints around packaging, installation, and downloading files. Compare bundling zk circuits with downloading them separately, including how they would be stored. Done means documenting a recommended approach and clear guidance for developers.

Written by the indexing model from the issue text.