Maintenance: SupportedOSPlatform attribute

Added the `SupportedOSPlatform` attribute to suppress build warning
CA1416.

src/Arch/M68k.Design/Properties/AssemblyInfo.cs

@@ -1,7 +1,8 @@
-using Reko;
+using Reko;
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 
 // General Information about an assembly is controlled through the following 
 // set of attributes. Change these attribute values to modify the information
@@ -14,6 +15,7 @@
 [assembly: AssemblyCopyright(AssemblyMetadata.Copyright)]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
+[assembly: SupportedOSPlatform("windows")]
 
 // Setting ComVisible to false makes the types in this assembly not visible 
 // to COM components.  If you need to access a type in this assembly from 

src/Arch/MicrochipPIC.Design/Properties/AssemblyInfo.cs

@@ -24,6 +24,7 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 
 // General Information about an assembly is controlled through the following
 // set of attributes. Change these attribute values to modify the information
@@ -36,6 +37,7 @@
 [assembly: AssemblyCopyright("Copyright © 2017-2024 Christian Hostelet - based on work from John Källén")]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
+[assembly: SupportedOSPlatform("windows")]
 
 // Setting ComVisible to false makes the types in this assembly not visible
 // to COM components.  If you need to access a type in this assembly from

src/Arch/PowerPC.Design/Properties/AssemblyInfo.cs

@@ -2,6 +2,7 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 
 [assembly: System.Runtime.Versioning.SupportedOSPlatformAttribute("windows")]
 
@@ -16,6 +17,7 @@
 [assembly: AssemblyCopyright(AssemblyMetadata.Copyright)]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
+[assembly: SupportedOSPlatform("windows")]
 
 // Setting ComVisible to false makes the types in this assembly not visible
 // to COM components.  If you need to access a type in this assembly from

src/Arch/X86.Design/Properties/AssemblyInfo.cs

@@ -2,6 +2,7 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 
 // General Information about an assembly is controlled through the following 
 // set of attributes. Change these attribute values to modify the information
@@ -14,6 +15,7 @@
 [assembly: AssemblyCopyright(AssemblyMetadata.Copyright)]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
+[assembly: SupportedOSPlatform("windows")]
 
 // Setting ComVisible to false makes the types in this assembly not visible 
 // to COM components.  If you need to access a type in this assembly from 

src/UiPrototype/Properties/AssemblyInfo.cs

@@ -1,6 +1,7 @@
-using System.Reflection;
+using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 
 // General Information about an assembly is controlled through the following 
 // set of attributes. Change these attribute values to modify the information
@@ -13,6 +14,7 @@
 [assembly: AssemblyCopyright(Reko.AssemblyMetadata.Copyright)]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
+[assembly: SupportedOSPlatform("windows")]
 
 // Setting ComVisible to false makes the types in this assembly not visible 
 // to COM components.  If you need to access a type in this assembly from 

src/UserInterfaces/WindowsForms/Controls/ImageMapControl.cs

@@ -31,7 +31,6 @@ namespace Reko.UserInterfaces.WindowsForms.Controls
     /// <summary>
     /// Displays an image map graphically.
     /// </summary>
-    [SupportedOSPlatform("windows")]
 	public class ImageMapControl : Control
 	{
 		private SegmentMap map;

src/UserInterfaces/WindowsForms/Controls/MemoryControl.cs

@@ -590,7 +590,6 @@ private void vscroller_Scroll(object sender, ScrollEventArgs e)
             }
         }
 
-        [SupportedOSPlatform("windows")]
         public class MemoryControlPainter
         {
             private MemoryControl ctrl;

src/UserInterfaces/WindowsForms/Properties/AssemblyInfo.cs

@@ -2,6 +2,7 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
 
 [assembly: System.Runtime.Versioning.SupportedOSPlatformAttribute("windows")]
 
@@ -16,6 +17,7 @@
 [assembly: AssemblyCopyright(AssemblyMetadata.Copyright)]
 [assembly: AssemblyTrademark("")]
 [assembly: AssemblyCulture("")]
+[assembly: SupportedOSPlatform("windows")]
 
 // Setting ComVisible to false makes the types in this assembly not visible 
 // to COM components.  If you need to access a type in this assembly from 

src/UserInterfaces/WindowsForms/WindowsFormsRegistryService.cs

@@ -19,14 +19,9 @@
 #endregion
 
 using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Runtime.Versioning;
-using System.Text;
 
 namespace Reko.UserInterfaces.WindowsForms
 {
-    [SupportedOSPlatform("windows")]
     public class WindowsFormsRegistryService : IRegistryService
     {
         private RegistryKey hkcu;