Is your feature request related to a problem or challenge? Please describe what you are trying to do.

Currently the avro reader requires us to provide a BufRead impl to read the data, this means
a. It can never be done in a streaming fashion
b. It can not be used in an asynchronous context.

Describe the solution you'd like

A similar Reader to the one existing, but one that supports async reading, preferable using ObjectStore.

Describe alternatives you've considered

Additional context