feat: use cloudflare headers when available

[ScottEAdams]

Fixes #1047. If running behind cloudflare, will use the cloudflare managed transform headers if available - https://developers.cloudflare.com/rules/transform/managed-transforms/reference/

[vercel[bot]]

@ScottEAdams is attempting to deploy a commit to the Jitsu Team on Vercel.

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[vklimontovich]

I'm going to close this one without merging since a new service, ingest is now responsible for processing messages