Removed outputvalues from the API (#317)

* Refactor SelectionHandler and update dependencies

Simplified `SelectionHandler.cs` by removing `aggregatedSingle` parameter and related logic. Updated `GetSelection` method to always sort values.

Removed `outputvalues` parameter from `GetTableData` in `TableApiController.cs` and updated `MapDataParameters` accordingly.

Removed `OutputValues` property from `SelectionResponseMapper.cs`.

Updated `PxWeb.Api2.Server` package to `2.0.0-beta.10`.

Refreshed `updated` and `Published` dates in `Menu.xml`.

* Fixed test

* Refactor SelectionHandler to simplify method signatures

Removed the `IPXModelBuilder builder` parameter from `MapCustomizedSelection` and `GetSelection` methods to reduce unnecessary dependencies. Modified `AddValue` method to remove the `variable` parameter, making it static and requiring only a list of values and a value to add. Updated calls to `AddValue` to reflect the new method signature. These changes streamline the code and improve maintainability.

* Made methods static

* one more metod made static

* retored Menu.xml

Author: likp