Invoking a command waits up to 30s for NuGet or another process (#4657)

* Invoking a command waits up to 30s for NuGet or another process

* PR Feedback

test/Microsoft.DotNet.Tools.Tests.Utilities/Assertions/FileInfoExtensions.FileInfoNuGetLock.cs

@@ -0,0 +1,57 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading;
+using System.Threading.Tasks;
+using NuGet.Common;
+
+namespace Microsoft.DotNet.Tools.Test.Utilities
+{
+    public static partial class FileInfoExtensions
+    {
+        private class FileInfoNuGetLock : IDisposable
+        {
+            private FileStream _fileStream;
+
+            private CancellationTokenSource _cancellationTokenSource;
+
+            private Task _task;
+
+            public FileInfoNuGetLock(FileInfo fileInfo)
+            {
+                _cancellationTokenSource = new CancellationTokenSource();
+
+                _task = ConcurrencyUtilities.ExecuteWithFileLockedAsync<int>(
+                    fileInfo.FullName,
+                    lockedToken =>
+                    {
+                        Task.Delay(60000, _cancellationTokenSource.Token).Wait();
+
+                        return Task.FromResult(0);   
+                    },
+                    _cancellationTokenSource.Token);
+            }
+
+            public void Dispose()
+            {
+                _cancellationTokenSource.Cancel();
+
+                try
+                {
+                    _task.Wait();
+                }
+                catch (AggregateException)
+                {
+                }
+                finally
+                {
+                    _cancellationTokenSource.Dispose();
+                }
+            }
+        }
+    }
+}