Support duplicate query parameters

[MarvinKlein1508]

Is your feature request related to a problem? Please describe.
I have a class which holds two properties. One of them is an IEnumerable<string>.

For example:

public class GetAllProductsRequest 
{
    public string? Name { get; set; }
    public IEnumerable<string>? Types { get; set; }
}

In my interface I have it like this:

[Get(ApiEndpoints.Products.GetAll)]
Task<ProductsResponse> GetProductsAsync(GetAllProductsRequest request, CancellationToken cancellationToken = default);

The refit client now tries to fetch this URL:

https://localhost:7049/api/products?Types=N%2C1

This results in my API crashing because I expect the value to be send like in swagger. Which would be:

https://localhost:7049/api/products?Types=N&Types=1

Describe the solution you'd like
I would likt be able to define this behavior using the [Query] attribute.

Describe alternatives you've considered
I'Ve tried to use [Query.Multi] but using this requires me to change the API to split the values everytime because all types will be in Types[0]

[xljiulang]

The collection field feature is not currently supported in refit, but is supported by WebApiClient