Gateway timeout (504) when trying to retrieve /api/v0/pins

# Description

On our production server, with around 60k streams, I'm getting a gateway timeout when POSTing to /api/v0/pins. My intention is to get a list of streams, so that I can continue inspecting individual streams.

The lack of pagination when returning the result set is surely going to create problems down the line.

# Technical Information

Change /api/v0/pins, or any other endpoint that potentially returns long lists of data to return a paginated set, instead of the entire dataset.