feat(setup): overhaul dialog data handling

[theEvilReaper]

Proposed changes

At the moment, there is a single large listener handling different cases when data is received from a dialog. This is not very maintainable and should be refactored. This PR introduces a new interface and dedicated handler implementations to process dialog data.

Types of changes

What types of changes does your code introduce to this project?
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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

Put an x in the boxes that apply. You can also fill these out after creating the PR. If you're unsure about any of
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• I have read the CONTRIBUTING.md
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)

[TheMeinerLP]

I saw several same thing on other places

[github-actions]

Test results

 96 files   96 suites   50s ⏱️
 93 tests  88 ✅  5 💤 0 ❌
282 runs  267 ✅ 15 💤 0 ❌

Results for commit 9ec2306.

[TheMeinerLP]

LGTM