Support for QueryValue as a object

[gs-kug]

Feature description

When creating multiple or reusable query parameters like pagination object for example is good to have all fields in a class converted to @QueryValue. For example:

class JsPaginationRequest {
  Integer page;
  Integer size;
}

@Controller {
   @Get(@QueryValue JsPaginationRequest pagination) {
   }
}

the pagination object could be populated by the params ?page=1&size=10 as optional parameters.
This should be equivalent to:

@Controller {
   @Get(@QueryValue @Nullable Integer page, @QueryValue @Nullable Integer size) {
   }
}

Another use case is in a filter UI where a huge number of parameters are optional and part of the search.

Consider validation required and nonrequired fields inside object.

SpringDoc has a @ParameterObject annotation that does this.

Another advantage is from a developer perspective you don't have a chance to misspell any filter or pagination in different controllers as it is now reusable, and you can pass the hole object thought your layer no need to manual create the object in controller layer.