Add install tool command (#8132)

* compose all the parts

* Fix on obtain and shim maker for better end to end experience
  * Fix error when there is space in the middle of path of nuget config
  * Fix path in profile.d is the tmp home path during install
  * better handle of ~home
  * remove profile.d file in uninstall script
  * Fix test since it looks up current directory
  * folder structure inside nupkg to tools/TFM/RID/mytool.dll
  * Add check for config file existence
  * Rename name space to Microsoft.DotNet.ShellShim
  * Rename name space to Microsoft.DotNet.ToolPackage

src/dotnet/commands/dotnet-install/dotnet-install-tool/ProjectRestorer.cs

@@ -0,0 +1,56 @@
+// 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 Microsoft.DotNet.Cli;
+using Microsoft.DotNet.ToolPackage;
+using Microsoft.DotNet.PlatformAbstractions;
+using Microsoft.Extensions.EnvironmentAbstractions;
+
+namespace Microsoft.DotNet.Tools.Install.Tool
+{
+    internal class ProjectRestorer : IProjectRestorer
+    {
+        public void Restore(
+            FilePath projectPath,
+            DirectoryPath assetJsonOutput,
+            FilePath? nugetconfig)
+        {
+            var argsToPassToRestore = new List<string>();
+
+            argsToPassToRestore.Add(projectPath.Value);
+            if (nugetconfig != null)
+            {
+                argsToPassToRestore.Add("--configfile");
+                argsToPassToRestore.Add(nugetconfig.Value.Value);
+            }
+
+            argsToPassToRestore.AddRange(new List<string>
+            {
+                "--runtime",
+                RuntimeEnvironment.GetRuntimeIdentifier(),
+                $"/p:BaseIntermediateOutputPath={assetJsonOutput.ToQuotedString()}"
+            });
+
+            var command = new DotNetCommandFactory(alwaysRunOutOfProc: true)
+                .Create(
+                    "restore",
+                    argsToPassToRestore)
+                .CaptureStdOut()
+                .CaptureStdErr();
+
+            var result = command.Execute();
+            if (result.ExitCode != 0)
+            {
+                throw new PackageObtainException("Failed to restore package. " +
+                                                 $"{Environment.NewLine}WorkingDirectory: " +
+                                                 result.StartInfo.WorkingDirectory +
+                                                 $"{Environment.NewLine}Arguments: " +
+                                                 result.StartInfo.Arguments +
+                                                 $"{Environment.NewLine}Output: " +
+                                                 result.StdErr + result.StdOut);
+            }
+        }
+    }
+}