Move NativeMethods to System namespace

src/Tgstation.Server.Host/IO/WindowsSymlinkFactory.cs

@@ -4,6 +4,7 @@ using System.Threading;
 using System.Threading.Tasks;
 
 using BetterWin32Errors;
+using Tgstation.Server.Host.System;
 
 namespace Tgstation.Server.Host.IO
 {

src/Tgstation.Server.Host/Security/WindowsSystemIdentityFactory.cs

@@ -10,6 +10,7 @@ using Microsoft.Win32.SafeHandles;
 
 using Tgstation.Server.Host.IO;
 using Tgstation.Server.Host.Models;
+using Tgstation.Server.Host.System;
 
 namespace Tgstation.Server.Host.Security
 {

src/Tgstation.Server.Host/System/NativeMethods.cs

@@ -2,7 +2,7 @@
 using System.Runtime.InteropServices;
 using System.Text;
 
-namespace Tgstation.Server.Host
+namespace Tgstation.Server.Host.System
 {
 	/// <summary>
 	/// Native Windows methods used by the code.

src/Tgstation.Server.Host/System/WindowsProcessFeatures.cs

@@ -13,6 +13,7 @@ using Microsoft.Extensions.Logging;
 using Tgstation.Server.Api.Models;
 using Tgstation.Server.Host.IO;
 using Tgstation.Server.Host.Jobs;
+using Tgstation.Server.Host.System;
 
 namespace Tgstation.Server.Host.System
 {