redis installation and oauth state services

[bruceadowns]

Create a new Installation service and OAuth State service using Redis (or ValKey) storage.

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

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[seratch]

Hi @bruceadowns, thank you so much for sending this pull request! However, our team currently does not have plans to add further built-in implementations to the package due to our team's capacity and priorities. If you plan to use this Redis implementation for your projects, please include it within your project or release it as your own open-source library.

Thanks again for taking the time to make this PR! For future collaborations, creating an issue to suggest a new feature before working on code changes would make the process smoother. We sometimes have to say no to some external contributions, even when they're great. It'd be appreciated if you could understand this.

[bruceadowns]

Thank you for reviewing @seratch, I will incorporate this functionality directly in my project for now. For the record the redis/valkey cache solution works great, with a much better latency than S3, which is important considering how often the middleware calls findBot().