Add configuration for non interactive mode

Author: TrymBeast

src/Cake.NuGet/Constants.cs

@@ -27,6 +27,11 @@ public static class NuGet
             /// The config key name for overriding the default NuGet config file.
             /// </summary>
             public const string ConfigFile = "NuGet_ConfigFile";
+
+            /// <summary>
+            /// The config key name for non-interactive mode.
+            /// </summary>
+            public const string NonInteractive = "NuGet_NonInteractive";
         }
 
         public static class Paths

src/Cake.NuGet/Installers/InProcessInstaller.cs

@@ -115,7 +115,13 @@ public IReadOnlyCollection<IFile> Install(PackageReference package, PackageType
             allRepositories.AddRange(localAndPrimaryRepositories);
             allRepositories.AddRange(sourceRepositoryProvider.Repositories);
 
-            DefaultCredentialServiceUtility.SetupDefaultCredentialService(_nugetLogger, true);
+            var nonInteractiveString = _config.GetValue(Constants.NuGet.NonInteractive) ?? bool.TrueString;
+            if (!bool.TryParse(nonInteractiveString, out bool nonInteractive))
+            {
+                // If there is no explicit preference, use non interactive.
+                nonInteractive = true;
+            }
+            DefaultCredentialServiceUtility.SetupDefaultCredentialService(_nugetLogger, nonInteractive);
 
             var packageIdentity = GetPackageId(package, localAndPrimaryRepositories, targetFramework, _sourceCacheContext, _nugetLogger);
             if (packageIdentity == null)