Skip headings in `wingetcreate show` command

Description of the new feature / enhancement

wingetcreate show can be used in automation scenarios. For that purpose, it's output should be one that can be cleanly parsed. Current output of wingetcreate show includes headings which were originally intended for user reading experience. I think we should remove them in favor of output that is parsed more cleanly in automation scenario

While the YAML output is still parse-able, the JSON output looks like

Installer Manifest:
{
  ...
}

Default Locale (en-US) Manifest:
{
   ...
}

Version Manifest:
{
   ...
}

The headings can be replaced by something that is easier to deal with in automation scenarios, maybe something like:

{
  "InstallerManifest": {
    ...
  },
  "DefaultLocaleManifest": {
    ...
  },
  "LocaleManifests": [
    {
        ...
    },
    {
        ...
    }
  ],
  "VersionManifest": {
      ...
  }
}

Proposed technical implementation details

No response

Start at the wingetcreate show command and inspect how its YAML and JSON output are assembled. Determine how the current headings are emitted and how the proposed structured JSON should represent the installer, default locale, locale, and version manifests. Done means automation can parse the output without headings while preserving the manifest data.