Adds system.net.requests to default loaded assemblies

Author: ENDAVA\mzorec

src/FlubuCore/Scripting/ScriptLoader.cs

@@ -415,6 +415,7 @@ internal static List<AssemblyInfo> GetDefaultReferences()
             assemblyReferenceLocations.AddReferenceByAssemblyName("System.Xml.Serialization");
             assemblyReferenceLocations.AddReferenceByAssemblyName("System.Data.Common");
             assemblyReferenceLocations.AddReferenceByAssemblyName("System.ComponentModel.Primitives");
+            assemblyReferenceLocations.AddReferenceByAssemblyName("System.Net.Requests");
             assemblyReferenceLocations.AddReferenceByAssemblyName("Microsoft.CSharp");
 #if NETSTANDARD2_0
             var systemAss = typeof(Console).GetTypeInfo().Assembly;