Enable AutoSaveRAM by default

long overdue; explicit reversal of the "manual only" policy we had prior

Author: YoshiRulz

src/BizHawk.Client.Common/config/Config.cs

@@ -188,12 +188,12 @@ public void SetWindowScaleFor(string sysID, int windowScale)
 		/// <summary>
 		/// Whether to make AutoSave files at periodic intervals
 		/// </summary>
-		public bool AutosaveSaveRAM { get; set; }
+		public bool AutosaveSaveRAM { get; set; } = true;
 
 		/// <summary>
 		/// Intervals at which to make AutoSave files
 		/// </summary>
-		public int FlushSaveRamFrames { get; set; }
+		public int FlushSaveRamFrames { get; set; } = 5/*min*/ * 60/*s/min*/ * 60/*fr/s*/;
 
 		public bool TurboSeek { get; set; }