[WIP] Properly support propagation

[WalshyDev]

TODO:

• Figure out how I want usage to be
• Tests for OTLP
• Tests for Zipkin
• Zipkin single header
• Test myself
• Update service binding example
• Update README

Made a patch to quickly fix cloudflare/workers-sdk#2641

[changeset-bot]

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Latest commit: 2cd26c1

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