Create a new webhook for messages

curl --request POST \
  --url https://api.openphone.com/v1/webhooks/messages \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '{
  "events": [
    "message.received"
  ],
  "label": "my webhook label",
  "resourceIds": [
    "<string>"
  ],
  "status": "enabled",
  "url": "https://example.com",
  "userId": "US123abc"
}'

{
  "data": {
    "id": "WHabcd1234",
    "userId": "US123abc",
    "orgId": "OR1223abc",
    "label": "my webhook label",
    "status": "enabled",
    "url": "https://example.com/",
    "key": "example-key",
    "createdAt": "2022-01-01T00:00:00Z",
    "updatedAt": "2022-01-01T00:00:00Z",
    "deletedAt": "2022-01-01T00:00:00Z",
    "events": [
      "message.received"
    ],
    "resourceIds": [
      "<string>"
    ]
  }
}