Document Webhook format

[n1ru4l]

There is no information on the shape of the Webhook payload in the docs: https://docs.graphql-hive.com/features/alerts-notifications#adding-a-channel

In addition to that, it could be helpful to have some kind of preview and "send test event" on the "Adding a Channel Page" and "Available Channels" table.

[kmcgill88]

https://the-guild.dev/graphql/hive/docs/management/projects#schema-changed-notification

It appears type SchemaChangedNotificationPayload has changed form.

I was expecting changes like this per the website.

changes: Array<{
    criticality: 'Breaking' | 'Dangerous' | 'Safe'
    message: string
    path?: string
}>

actual

{
    "type": "ENUM_VALUE_ADDED",
    "criticality": {
      "level": "DANGEROUS",
      "reason": "Adding an enum value may break existing clients that were not programming defensively against an added case when querying an enum."
    },
    "message": "Enum value 'FOO' was added to enum 'join__Graph'",
    "meta": {
      "enumName": "join__Graph",
      "addedEnumValueName": "FOO"
    },
    "path": "join__Graph.FOO"
}

[kmcgill88]

It appears criticality has gone back to being a string and it's all uppercase. BREAKING not Breaking. In fact, it doesn't look like changes are defined at all on the interface. I'm happy to make a PR but failing to see where WebhookInput is created.