Add reference, allowed_mentions, and mention_author parameters to Paginator.send()

[krittick]

Summary

This adds 3 parameters (reference, allowed_mentions, and mention_author) to Paginator.send() to allow controlling the corresponding underlying Messageable.send() behavior.

Closes #1096

Checklist

• If code changes were made then they have been tested.
  • I have updated the documentation to reflect the changes.
• If type: ignore comments were used, a comment is also left explaining why
• This PR fixes an issue.
• This PR adds something new (e.g. new method or parameters).
• This PR is a breaking change (e.g. methods or parameters removed/renamed)
• This PR is not a code change (e.g. documentation, README, typehinting, examples, ...)