feat: Add support for creating exceptions from an asynchronous response (#688)

* feat: add suport for mapping exceptions to rest callables

* avoid wrapping errors for rest callable

* fix lint issues

* add test coverage

* address PR comments

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* fix lint issues

* fix for none type method

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Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
3 files changed