refac: vampires using dict redis hget

[DasVinch]

@mileslucas

I had this file open and suddenly wondered why not have redis just return a dict because the pipeline positional structure is so annoying.
It's barely a few lines less since we have to spell out the dictionary for defaults.

There's a sibling commit in scxkw, already on origin/dev

Do you like the style?

[DasVinch]

plus some typing hints, now camstack is aware that self.RDB is Redis | None.

Issue there is that most Redis class methods can return awaitables, so now its complaining everywhere that Awaitable types are not handled...