Moving the ProjectToolsCommandResolver to dotnet out of Cli.Utils because of the dependency on Microsoft.Build. Also added a EndToEnd test for tools ref using the MSBuildTestApp.

test/EndToEnd/GivenDotNetUsesMSBuild.cs

@@ -43,5 +43,27 @@ namespace Microsoft.DotNet.Tests.EndToEnd
                     .HaveStdOutContaining("Hello World!");
             }
         }
+
+        [Fact]
+        public void ItCanRunToolsInACSProj()
+        {
+            var testAppName = "MSBuildTestApp";
+            var testInstance = TestAssetsManager
+                .CreateTestInstance(testAppName);
+
+            var testProjectDirectory = testInstance.TestRoot;
+
+            new Restore3Command()
+                .WithWorkingDirectory(testProjectDirectory)
+                .Execute()
+                .Should()
+                .Pass();
+
+            new DotnetCommand()
+                .WithWorkingDirectory(testInstance.TestRoot)
+                .ExecuteWithCapturedOutput("portable")
+                .Should()
+                .Pass();
+        }
     }
 }