Versioning

[avivkeller]

We need to add versioning metadata to generate the API documentation of multiple webpack versions.

An example of this could be:

{
  "latest": "v6.x",
  "versions": [
    {
      "label": "v5.x",
      "major": 5,
      "exactVersion": "5.91.0",
      "commit": "abc123",
      "frozen": true
    },
    {
      "label": "v6.x",
      "major": 6,
      "exactVersion": "6.1.0",
      "commit": "def456",
      "frozen": false
    }
  ]
}

[ryzrr]

I've drafted the version metadata contract and shared with the team . Planning to raise the PR for versions.json once the team confirms the schema, followed by update-versions.mjs and place-output.mjs.