Add Arazzo rule or plugin to detect not defined output value

[DmitryAnansky]

Is your feature request related to a problem? Please describe.

It is a rather common mistake in Arazzo specification, when not defined output used in consequent steps. As expected in this case the Respect run result is an error.

    steps:
      - stepId: list-events
        operationPath: '{$sourceDescriptions.museum-api.url}#/paths/~1special-events/get'
      - stepId: create-event
        operationPath: '{$sourceDescriptions.museum-api.url}#/paths/~1special-events/post'
        requestBody:
          payload:
            location: 'Under the seaaa 🦀 🎶 🌊.'
            dates:
              - $steps.list-events.outputs.events.0.dates.0

Describe the solution you'd like

Would be beneficial to have build in Rule or Plugin that will allow to validate this type of mistake before the execution. It is important to check outputs occurrence on different levels, like parameters, payload, .etc. and highlight if it was not previously defined on workflow or step levels.

Describe alternatives you've considered

Do nothing and allow users to fix the errors.

Additional context

Original idea conversation: https://redoc-ly.slack.com/archives/C071H03PDC1/p1748614654088499