Elvis accent and singing

[Otterficial]

I love the goofy new singing mechanics, and this is a super small suggestion to tack onto it.

I think ingesting essence of elvis and getting that speech modifier should automatically send out everything you say as if you had prefixed it with % to sing! It'd be a relatively small easy little change that'd just be completely for fun, and I was even looking in to trying to do it myself but I'm getting lost trying to even find my way through the codebase, so I figured I'd spout this idea here in case anyone more experienced feels like throwing it into a PR at any point!

Thanks for hearin' me out on such a small thing!