Adding helpers to parse Bigtable create cluster operation.

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

* chore(deps): update all dependencies

* revert protobuf

* revert protobuf

Co-authored-by: Anthonios Partheniou <partheniou@google.com>

* feat(x-goog-spanner-request-id): introduce AtomicCounter

This change introduces AtomicCounter, a concurrency/thread-safe
counter do deal with the multi-threaded nature of variables.
It permits operations:
* atomic_counter += 1
* value = atomic_counter + 1
* atomic_counter.value

that'll be paramount to bringing in the logic for
x-goog-spanner-request-id in much reduced changelists.

Updates #1261
Carved out from PR #1264

* Tests for with_request_id

* chore: remove sleep

* chore: remove unused import

---------

Co-authored-by: Knut Olav Løite <koloite@gmail.com>

* chore(x-goog-request-id): commit testing scaffold

This change commits the scaffolding for which testing
will be used. This is a carve out of PRs #1264 and #1364,
meant to make those changes lighter and much easier to
review then merge.

Updates #1261

* Use guard to keep x-goog-request-id interceptor docile in tests until activation later

* AtomicCounter update

* Remove duplicate unavailable_status that had been already committed into main