* chore: add client_options

…leep (#1547)

chore: No sleep on initial attempt in exponential backoff implementation

It is unintuitive that the initial attempt in the exponential backoff
loop sleeps. This can lead to subtle bugs in future call sites.

This patch refactors the exponential backoff to begin sleeping on the
2nd iteration so requests can be done in a single for loop.

* add AsyncAbstractObjectStream

this will be the parent class for AsyncReadObjectStream and AsyncWriteObjectStream

* keep _AsyncAbstractObjectStream private

* Add _AsyncReadObjectStream and it's stubs

* fix doc strings, add licence and type hints

* pass abstract methods

* add handle param

* include handle in tests

* remove unit tests for abstract class

* edit doc string for _AsyncReadObjectStream

* bucket_name and object_name cannot be NONE

* bucket_name and object_name cannot be None

* minor edit - add bidi-stream in doc string

* add checks for invalid inputs

…low_large_results=False (#1547)