Feature Request: multiple random endpoints

As I understand it currently, this plugin allows one random endpoint to be defined. I'd love to be able to define multiple endpoints each redirecting the user to a random selection, each endpoint having its own filters.

Start by reviewing the plugin's current single-endpoint configuration and how its random selection and filters are handled. Done means supporting multiple independently defined endpoints, with each endpoint redirecting to a random selection using its own filters.

Written by the indexing model from the issue text.