Extract ISerializerBenchmark to its own file
Moved ISerializerBenchmark from Program.cs to a new ISerializerBenchmark.cs file under the AyCode.Core.Serializers.Console.Benchmarks namespace. Updated all benchmark classes in Program.cs to implement the interface from the new namespace and made them internal. Added the necessary using directive to Program.cs. Adjusted a PowerShell script in settings.local.json to ensure the new using is present. Removed the old interface definition from Program.cs.
