Login With Vimeo OAuth

[PrismaPhonic]

As it turns out, Soundcloud has closed off access to their API indefinitely. We've decided to use Vimeo instead.

Vimeo API Docs: https://developer.vimeo.com/api/reference

We should create a minimal Vimeo client api in Rust and use that. For now we only need Oauth login, fetching a users private videos, and video upload capabilities.