Enable SA1205 and fix non-compliance (except in Cores)

"Partial elements should declare access" (type decl. modifier not copied across
all parts)

Common.ruleset

@@ -392,9 +392,6 @@
 		<!-- Static elements should appear before instance elements -->
 		<Rule Id="SA1204" Action="Hidden" />
 
-		<!-- Partial elements should declare access -->
-		<Rule Id="SA1205" Action="Hidden" />
-
 		<!-- System using directives should be placed before other using directives -->
 		<Rule Id="SA1208" Action="Hidden" />
 

src/BizHawk.Client.EmuHawk/MainForm.FileLoader.cs

@@ -10,7 +10,7 @@ using BizHawk.Client.Common;
 
 namespace BizHawk.Client.EmuHawk
 {
-	partial class MainForm
+	public partial class MainForm
 	{
 		private enum LoadOrdering
 		{

src/BizHawk.Client.EmuHawk/MainForm.Movie.cs

@@ -7,7 +7,7 @@ using BizHawk.Emulation.Common;
 
 namespace BizHawk.Client.EmuHawk
 {
-	partial class MainForm
+	public partial class MainForm
 	{
 		public bool StartNewMovie(IMovie movie, bool record)
 		{

src/BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj

@@ -2,7 +2,7 @@
 	<Import Project="../MainSlnCommon.props" />
 	<PropertyGroup>
 		<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-		<NoWarn>$(NoWarn);SA1400</NoWarn>
+		<NoWarn>$(NoWarn);SA1205;SA1400</NoWarn>
 		<TargetFramework>netstandard2.0</TargetFramework>
 	</PropertyGroup>
 	<ItemGroup>

src/BizHawk.Emulation.DiscSystem/Disc.cs

@@ -16,7 +16,7 @@ using System.Collections.Generic;
 
 namespace BizHawk.Emulation.DiscSystem
 {
-	public partial class Disc : IDisposable
+	public sealed partial class Disc : IDisposable
 	{
 		/// <summary>
 		/// Automagically loads a disc, without any fine-tuned control at all

src/BizHawk.Emulation.DiscSystem/DiscFormats/Blobs/Blob_ECM.cs

@@ -32,7 +32,7 @@ using BizHawk.Common.NumberExtensions;
 
 namespace BizHawk.Emulation.DiscSystem
 {
-	sealed partial class Disc
+	public sealed partial class Disc
 	{
 		internal class Blob_ECM : IBlob
 		{

src/BizHawk.Emulation.DiscSystem/DiscFormats/Blobs/Blob_RawFile.cs

@@ -2,7 +2,7 @@
 
 namespace BizHawk.Emulation.DiscSystem
 {
-	partial class Disc
+	public sealed partial class Disc
 	{
 		internal class Blob_RawFile : IBlob
 		{

src/BizHawk.Emulation.DiscSystem/DiscFormats/Blobs/Blob_WaveFile.cs

@@ -4,7 +4,7 @@ using System.IO;
 
 namespace BizHawk.Emulation.DiscSystem
 {
-	partial class Disc
+	public sealed partial class Disc
 	{
 		/// <summary>
 		/// TODO - double-check that riffmaster is not filling memory at load-time but reading through to the disk

src/BizHawk.Emulation.DiscSystem/DiscFormats/Blobs/Blob_ZeroPadAdapter.cs

@@ -4,7 +4,7 @@ using System;
 
 namespace BizHawk.Emulation.DiscSystem
 {
-	public partial class Disc : IDisposable
+	public sealed partial class Disc : IDisposable
 	{
 		internal sealed class Blob_ZeroPadAdapter : IBlob
 		{

src/BizHawk.Emulation.DiscSystem/DiscMountJob.MednaDisc.cs

@@ -1,6 +1,6 @@
 namespace BizHawk.Emulation.DiscSystem
 {
-	partial class DiscMountJob
+	public partial class DiscMountJob
 	{
 		private class SS_MednaDisc : ISectorSynthJob2448
 		{