feat: webhook example

[heilhead]

Description

This adds a webhook example and some minor fixes to RPC types surrounding watch registration and webhook dispatch.

Note: To run the example make sure the relay is running locally to be able to dispatch webhooks to the local server.

[publisher] client id: did:key:z6MkrNnCuEkjEE2wbF4NUQwX6RoBWYRn2HC3rFdAMM2CKZvV
[subscriber] client id: did:key:z6Mkge373J7U6BfvLsCBzDA1Hf7W3wEtUJSApbfmGDGw1gXM
[subscriber] watch registered: relay_id=did:key:z6MksL1xGunmRDzskniANbwMzPMUWUdyuUVfrd4WhvgHKK1Q
[publisher] watch registered: relay_id=did:key:z6MksL1xGunmRDzskniANbwMzPMUWUdyuUVfrd4WhvgHKK1Q
[publisher] message published: topic=37931305f08feb99a361828a30529aa00921d657d7d2df636b0a9cec3d79d71c message=Hello WalletConnect!
[subscriber] received message: Hello WalletConnect!
[webhook] publisher: url=http://127.0.0.1:10100/publisher_webhook data={
  "iss": "did:key:z6MksL1xGunmRDzskniANbwMzPMUWUdyuUVfrd4WhvgHKK1Q",
  "aud": "http://127.0.0.1:10100",
  "sub": "did:key:z6MkrNnCuEkjEE2wbF4NUQwX6RoBWYRn2HC3rFdAMM2CKZvV",
  "iat": 1687598503,
  "act": "irn_watchEvent",
  "typ": "publisher",
  "whu": "http://127.0.0.1:10100/publisher_webhook",
  "evt": {
    "status": "accepted",
    "topic": "37931305f08feb99a361828a30529aa00921d657d7d2df636b0a9cec3d79d71c",
    "message": "Hello WalletConnect!",
    "publishedAt": 1687598503347,
    "tag": 1100
  }
}
[webhook] subscriber: url=http://127.0.0.1:10100/subscriber_webhook data={
  "iss": "did:key:z6MksL1xGunmRDzskniANbwMzPMUWUdyuUVfrd4WhvgHKK1Q",
  "aud": "http://127.0.0.1:10100",
  "sub": "did:key:z6Mkge373J7U6BfvLsCBzDA1Hf7W3wEtUJSApbfmGDGw1gXM",
  "iat": 1687598503,
  "act": "irn_watchEvent",
  "typ": "subscriber",
  "whu": "http://127.0.0.1:10100/subscriber_webhook",
  "evt": {
    "status": "queued",
    "topic": "37931305f08feb99a361828a30529aa00921d657d7d2df636b0a9cec3d79d71c",
    "message": "Hello WalletConnect!",
    "publishedAt": 1687598503347,
    "tag": 1100
  }
}

How Has This Been Tested?

Manually.

Due Diligence

• Breaking change
• Requires a documentation update
• Requires a e2e/integration test update