Fully define dependencies for async support via optional dependency group

The current docs suggest adding aiohttp as a dependency to create an async app, but this creates a direct dependency on aiohttp for consumers of slack-bolt on what is is really a transitive dependency for the consumer of slack-bolt. This is especially important because this leaves it to consumers to find compatible versions of slack-bolt and aiohttp without the aide of a package manager.

slack-bolt should define an optional dependency group and include aiohttp so that consumers of this library don't need to maintain a dependency on a transitive. Consumers would be able to uv add slack-bolt[async] for example to include the optional dependencies.

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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Beginne mit der Dokumentation für slack_bolt.async_app.AsyncApp und den Paketmetadaten, in denen die Abhängigkeiten definiert sind. Prüfe, wie die async-Unterstützung derzeit installiert wird, und verifiziere anschließend, dass die optionale async-Abhängigkeitsgruppe aiohttp enthält und dass der dokumentierte Workflow uv add slack-bolt[async] es installiert, ohne dass Verbraucher dies direkt verwalten müssen.