Add optional name to semver/version groups

[JamieMason]

Description

1. Add an optional name/label/description property to semver groups and version groups.
2. Output those names in list, list-mismatches etc.
3. When no name is set, use it's array index + 1 as we do today.

[JamieMason]

Released in 9.3.2, docs to be updated later today but here is an example until then:

{
  "customTypes": {
    "engines": {
      "path": "engines",
      "strategy": "versionsByName"
    },
    "packageManager": {
      "path": "packageManager",
      "strategy": "name@version"
    }
  },
  "semverGroups": [
    {
      "dependencies": ["@aws-sdk/**"],
      "label": "AWS SDK Packages",
      "packages": ["**"],
      "range": ""
    }
  ],
  "versionGroups": [
    {
      "dependencies": ["@aws-sdk/**"],
      "label": "AWS SDK Packages",
      "packages": ["**"]
    }
  ]
}