Upload a zip archive of all songs for a bust

[anoadragon453]

So that people who want to archive the songs can do so easily.

We wouldn't be able to host the songs on Discord, but if we end up integrating with google services as part of #12, then uploading to google drive may be an option.

Perhaps either attaching it as a link to the !list command output, or sending it as a message at the end of a bust.

A request from Toasterless.

[Cephian]

I'm against attaching it to the end of !list as the compress+upload time would greatly increase latency of the command.

I might be okay with sending it in the "thanks for coming" message. I don't think this is a feature I'd implement myself as it doesn't to save that much time over just clicking every single direct link in the pinned message in sequence and downloading that way.

[anoadragon453]

Perhaps an !archive command that would need to be run after !list.

We could just post these at the end of an archive bust channel.