Added parent wildcard sortOrder

[EloB]

Issue: #16573

What I did

Added ability to have parent order wildcard in storySort.

For example:

"options": {
  "storySort": {
    "includeNames": true,
    "order": [
      "Introduction",
      "*", ["Introduction", "Examples", "*"]
    ]
  }
}

How to test

• Is this testable with Jest or Chromatic screenshots?
• Does this need a new example in the kitchen sink apps?
• Does this need an update to the documentation?

If your answer is yes to any of these, please make sure to include it in your PR.

How do you normally add test or live sandboxes for testing?

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[kylegach]

Nice update, @EloB! Appreciate your help to solve this issue.