Add GDB Stub

Author: merry, svc64

src/Ryujinx/Systems/Configuration/ConfigurationFileFormat.cs

@@ -464,6 +464,21 @@ namespace Ryujinx.Ava.Systems.Configuration
         /// </summary>
         public bool UseHypervisor { get; set; }
 
+        /// <summary>
+        /// Enables or disables the GDB stub
+        /// </summary>
+        public bool EnableGdbStub { get; set; }
+
+        /// <summary>
+        /// Which TCP port should the GDB stub listen on
+        /// </summary>
+        public ushort GdbStubPort { get; set; }
+
+        /// <summary>
+        /// Suspend execution when starting an application
+        /// </summary>
+        public bool DebuggerSuspendOnStart { get; set; }
+
         /// <summary>
         ///     Show toggles for dirty hacks in the UI.
         /// </summary>