Suppress CA1063 / CA2213 on the ported ResXResourceWriter.

ResXResourceWriter is a verbatim port of the Mono implementation
(see file header). Both warnings are about deliberate decisions in
the upstream port that we preserve for fidelity:

* CA1063 — Dispose() is virtual and the protected Dispose(bool)
  isn't, the inverse of the canonical pattern. Mono shape kept.
* CA2213 — the writer's stream / textwriter fields are caller-owned
  and intentionally not disposed by the writer.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: siegfriedpammer

ICSharpCode.Decompiler/Util/ResXResourceWriter.cs

@@ -31,6 +31,7 @@
 //	includes code by Mike Krüger and Lluis Sanchez
 
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Globalization;
 using System.IO;
 using System.Text;
@@ -40,6 +41,10 @@
 
 namespace ICSharpCode.Decompiler.Util
 {
+	[SuppressMessage("Usage", "CA1063:Implement IDisposable Correctly",
+		Justification = "Ported from the Mono ResXResourceWriter implementation; preserved verbatim for fidelity with the upstream.")]
+	[SuppressMessage("Usage", "CA2213:Disposable fields should be disposed",
+		Justification = "By design: the writer doesn't own the underlying stream/textwriter passed in by the caller. Mono behavior preserved.")]
 #if INSIDE_SYSTEM_WEB
 	internal
 #else