Implement offline fetcher #141
Description
Is your feature request related to a problem? Please describe.
Sometimes it is inefficient to query the same info multiple times with the provider.
Describe the solution you'd like
To build the offline provider for multiple querying and other use, similar to https://github.com/MeshJS/mesh/blob/main/packages/mesh-provider/src/offline/offline-fetcher.ts.
Describe alternatives you've considered
NA