add a bunch of copyright headers I missed

Author: SeeminglyScience

src/PowerShellEditorServices/Console/ConsoleProxy.cs

@@ -1,3 +1,8 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
 using System;
 using System.Runtime.InteropServices;
 using System.Threading;

src/PowerShellEditorServices/Console/IConsoleOperations.cs

@@ -1,3 +1,8 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
 using System;
 using System.Threading;
 using System.Threading.Tasks;

src/PowerShellEditorServices/Console/UnixConsoleOperations.cs

@@ -1,3 +1,8 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
 using System;
 using System.Threading;
 using System.Threading.Tasks;

src/PowerShellEditorServices/Console/WindowsConsoleOperations.cs

@@ -1,3 +1,8 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
 using System;
 using System.Threading;
 using System.Threading.Tasks;

src/PowerShellEditorServices/Session/PSReadLineProxy.cs

@@ -1,3 +1,8 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
 using System;
 using System.Reflection;
 

src/PowerShellEditorServices/Session/PipelineExecutionRequest.cs

@@ -1,3 +1,8 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
 using System.Collections.Generic;
 using System.Management.Automation;
 using System.Text;

src/PowerShellEditorServices/Session/PromptNest.cs

@@ -1,3 +1,8 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
 using System.Collections.Concurrent;
 using System.Threading;
 using System.Threading.Tasks;

src/PowerShellEditorServices/Session/PromptNestFrame.cs

@@ -1,3 +1,8 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
 using System;
 using System.Threading;
 using System.Threading.Tasks;

src/PowerShellEditorServices/Session/PromptNestFrameType.cs

@@ -1,3 +1,8 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
 using System;
 
 namespace Microsoft.PowerShell.EditorServices.Session

src/PowerShellEditorServices/Session/ThreadController.cs

@@ -1,3 +1,8 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+
 using System.Collections.Generic;
 using System.Management.Automation;
 using System.Management.Automation.Runspaces;