Implement Interaction.to_dict

[Dorukyum]

Summary

This attempts to add the feature suggested in #155.
The current implementation has the following problems:

• the user field is not complete
• the message field is missing
• the member field is missing

Open for contribution.

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, ...)

[UP929312]

So glad the old issues/feature requests are getting some love