Add Support for Storage

[Nik Kyriakidis]

hello,

I LOVE this package but I want to use more than just the features you currently provide.

I would imagine that adding in a component for Storage would be basically the same as a Firestore document but with a different implementation behind the scenes for generating the mutation functions etc.

are you accepting PRs for this sort of feature request?

[Guillaume Desforges]

I would love it as well, much required indeed