rfc: Revenue analytics

[Blaumaus]

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• I have searched Swetrix feature requests and there are no duplicates

Describe the solution you'd like?

Revenue analytics - it's already possible with Swetrix custom events + metadata, but ideally, it would be awesome to have ingration with Stripe and other payment systems to track revenue @ swetrix

Additional context

No response

How important is this feature to you?

3