Rule proposal: The "model" property should contain a "prop" property and an "event" property validly.

[resessh]

Please describe what the rule should do:

This rule requires prop and event properties in model property.

What category should the rule belong to?

• Enforces code style
• Warns about a potential error
• Suggests an alternate way of doing something
• Other (please specify:)

Provide 2-3 code examples that this rule should warn about:

<script>
export default {
  model: {
    prop: 'someValue',
    // Needs 'event' property.
  },
};
</script>

<script>
export default {
  model: {
    props: 'someValue', // Needs 'prop' property.
    event: 'some-event',
  },
};
</script>

Additional context

1. If settings is missing, v-model uses value as the prop and input as the event. But both settings should be required when use model property.
2. Miss-typing with property name is easy to occur and founding the mistake is much harder.