Create Outbox Sample

[msfussell]

Based on this docs issue dapr/docs#4506 it would be great to pull in this code example
https://github.com/jseguillon/dapr-outbox-python/blob/main/app.py
into the examples section for others to use.

[elena-kolevska]

Linking my response here: dapr/docs#4506 (comment).

PR in progress for adding the capability: #791

[dapr-bot]

This issue has been automatically marked as stale because it has not had activity in the last 60 days. It will be closed in the next 7 days unless it is tagged (pinned, good first issue, help wanted or triaged/resolved) or other activity occurs. Thank you for your contributions.