Specify highlighting language for data-output

At the moment the command-line plugin will have no prompt nor syntax highlighting for lines denoted using data-output. The command lines will be coloured using the language- class.

It would be fantastic to have another attribute to specify a syntax highlighting language for the data-output lines. Perhaps extend data-output to allow language to be specified here too?: e.g.:

<pre class="command-line language-bash" data-output="2-99 language-json" data-prompt="$"><code>
az account show --output jsonc
{
  "environmentName": "AzureCloud",
  "id": "2d31be49-d999-4415-bb65-8aec2c90ba62",
  "isDefault": true,
  "name": "Visual Studio Enterprise",
  "state": "Enabled",
  "tenantId": "76f988bf-86f1-41af-91ab-2d7cd011db47",
  "user": {
    "cloudShellID": true,
    "name": "richeney@microsoft.com",
    "type": "user"
  }
}
</code></pre>

Start by locating the command-line plugin and reading how data-output ranges are parsed and highlighted. Check any existing plugin tests or examples, then support a language value on data-output while preserving the language used for command lines; done means the shown JSON output is highlighted separately from the bash command.