Support for standard ASP.NET Core MVC query parameter binding

Hi! I was wondering why RestEase doesn’t support [serialization of complex type parameters](https://github.com/canton7/RestEase#serialization-of-variable-query-parameters) in a format compatible with ASP.NET Core MVC by default. It’s possible to do if you implement a custom serializer, but wouldn’t it be better to include this functionality in the box?

I implemented a simple version of such a serializer to use in my projects at work [ComplexTypeRequestQueryParamSerializer](https://github.com/rsivanov/RestEase.Serialization.Extensions). Maybe you would consider to do something alike for the future version of RestEase introducing an additional QuerySerializationMethod.

Start with RestEase’s linked “serialization of variable query parameters” documentation and compare the proposed behavior with the linked ComplexTypeRequestQueryParamSerializer implementation. Determine the required QuerySerializationMethod and verify that complex parameters serialize in a format compatible with ASP.NET Core MVC; the issue names no repository file or test.

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