Add an easier way to access Events API retry info

[seratch]

The issue #731 reminds me that slackapi/java-slack-sdk#677 can be added to bolt-python (and possibly to bolt-js).

Category (place an x in each of the [ ])

• slack_bolt.App and/or its core components
• slack_bolt.async_app.AsyncApp and/or its core components
• Adapters in slack_bolt.adapter
• Others

Requirements

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[siddik7181]

Hi @seratch, I’d love to contribute to this issue since it’s still open. I’ve created a PR (#1385). Could you please take a look when you have a moment?