Show provenance for annotations in web app

[cthoyt]

This is a proof of concept showing that we can propagate information about where a field displayed on the Bioregistry came from. This is important because the Bioregistry imports data from other registries, so it's useful to know where an annotation (e.g., the name associated with a prefix) came from, and under what license it's being reused.

For simple fields like name and description, this PoC shows that we can update the functions that get the data to return extra information. However, for more complex fields, it might be better to have a wrapper data structure (e.g., a 2-tuple, a dataclass) that incorporates the source information and the actual data