break: Remove stream argument from authenticator initializers

[edgarrmondragon]

Feature scope

Taps (catalog, state, stream maps, etc.)

Description

Currently authenticators have to be initialized with a stream of type RESTStream. This is not necessary since the authenticator doesn't need to know any of the stream's specifics and should only be initialized with the relevant parameters. Furthermore, we haven't come across a use case that requires it.