Prepare SwiftPM for the addition of Result to the stdlib

Author: moiseev

Sources/Commands/SwiftTool.swift

@@ -9,6 +9,7 @@
  */
 
 import Basic
+import enum Basic.Result
 import Build
 import PackageLoading
 import PackageGraph

Sources/PackageGraph/DependencyResolver.swift

@@ -9,6 +9,7 @@
 */
 
 import Basic
+import enum Basic.Result
 import struct Utility.Version
 import class Foundation.NSDate
 

Sources/PackageGraph/RepositoryPackageContainerProvider.swift

@@ -11,6 +11,7 @@
 import Dispatch
 
 import Basic
+import enum Basic.Result
 import PackageLoading
 import PackageModel
 import SourceControl

Sources/PackageLoading/ManifestLoader.swift

@@ -9,6 +9,7 @@
 */
 
 import Basic
+import enum Basic.Result
 import PackageModel
 import Utility
 import SPMLLBuild

Sources/SourceControl/RepositoryManager.swift

@@ -12,6 +12,7 @@ import Dispatch
 import class Foundation.OperationQueue
 
 import Basic
+import enum Basic.Result
 import Utility
 
 /// Delegate to notify clients about actions being performed by RepositoryManager.

Sources/TestSupport/MockDependencyResolver.swift

@@ -11,6 +11,7 @@ import XCTest
 import Dispatch
 
 import Basic
+import enum Basic.Result
 import PackageGraph
 import SourceControl
 

Sources/Workspace/Workspace.swift

@@ -9,6 +9,7 @@
 */
 
 import Basic
+import enum Basic.Result
 import Foundation
 import PackageLoading
 import PackageModel

Tests/BasicTests/AwaitTests.swift

@@ -12,6 +12,7 @@ import XCTest
 import Dispatch
 
 import Basic
+import enum Basic.Result
 
 class AwaitTests: XCTestCase {
 

Tests/BasicTests/ResultTests.swift

@@ -11,6 +11,7 @@
 import XCTest
 
 import Basic
+import enum Basic.Result
 import TestSupport
 
 private enum DummyError: Swift.Error {