Envelope Odata-responses

I added Odata to my project so I can use the url-query-parameters like $filter. With the .net Web-API demo-class/controller, the output now looks like this:

{
  "@odata.context": "https://localhost:5001/api/v1/$metadata#WeatherForecast",
  "value": [
    {
      "Id": 1,
      "Date": "2021-05-22T14:00:18.9513586+02:00",
      "TemperatureC": 36,
      "Summary": "Sweltering"
    },
    {
      "Id": 2,
      "Date": "2021-05-23T14:00:21.6231763+02:00",
      "TemperatureC": 44,
      "Summary": "Chilly"
    }
  ]
}

So far, so good, that works.

Our frontend-team that consumes my API now wants something like an envelope.. They want to get the result like this:

{
    "data": {
        "type": "WeatherForecast",
        "count": 2,
        "items" : [
            {
              "Id": 1,
              "Date": "2021-05-22T14:00:18.9513586+02:00",
              "TemperatureC": 36,
              "Summary": "Sweltering"
            },
            {
              "Id": 2,
              "Date": "2021-05-23T14:00:21.6231763+02:00",
              "TemperatureC": 44,
              "Summary": "Chilly"
            }
        ]
    },
    "error": null
}

Is there a possibility on how I can do this using OData? I found the ODataEntityTypeSerializer-class but it doesnt exist in v8. Any idea? Or even an example? :)

Start with the .NET Web API demo controller and the ODataEntityTypeSerializer reference in the issue, then inspect how response serialization works in v8. Determine whether the requested data/error envelope is supported and what extension point would be needed; done means a documented example or a clearly confirmed limitation.