Translate property names about ajv-i18n

[smeijer]

I think it would indeed be usefull to enable the usage of property.title for the error message.

{
  "properties": {
    "firstName": {
      "type": "string",
      "title": "Vorname",
    }
  },
  "required": ["firstName"],
}

err: sollte das erforderliche Attribut 'Vorname' enthalten

But also an option to omit the key?

err: this property is required

Because often the error message is already positioned next to the field.