Add stateValidationEnabled option to AppConfig

[seratch]

Enterprise Grid org admins can start installations of org-wide installation supported apps from their app management page. In this situation, no state parameter will be attached to the query string value for the OAuth flow. To support this use case, we can add a new option to customize the OAuth flow behavior. We still don't recommend disabling the state parameter validation for usual OAuth flow apps.

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

• bolt (Bolt for Java)
• bolt-{sub modules} (Bolt for Java - optional modules)
• slack-api-client (Slack API Clients)
• slack-api-model (Slack API Data Models)
• slack-api-*-kotlin-extension (Kotlin Extensions for Slack API Clients)
• slack-app-backend (The primitive layer of Bolt for Java)

Requirements

Please make sure if this topic is specific to this SDK. For general questions/issues about Slack API platform or its server-side, could you submit questions at https://my.slack.com/help/requests/new instead. 🙇

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