[Feature] Add helper Provider for dyn Provider

[mattsse]

Component

rpc

Describe the feature you would like

by installing fillers you get a FillProvider with a bunch of generics, this type is inconvenient to work with, especially because one usually doesn't care about any of this.

an easy workaround for this would be a reqwest::Client style wrapper:

struct P<N>(dyn Provider<N> + Unpin);

TODO

• add wrapper struct
• implement provider for it
• add a function to Provider trait that converts that type into that wrapper

Additional context

No response