Added more device definitions

RGB.NET.Devices.SteelSeries/Generic/LedMappings.cs

@@ -286,6 +286,15 @@ namespace RGB.NET.Devices.SteelSeries
             { LedId.Mousepad12, SteelSeriesLedId.ZoneTwelve },
         };
 
+        /// <summary>
+        /// Gets the mapping for two-zone mousepads
+        /// </summary>
+        public static LedMapping<SteelSeriesLedId> MousepadTwoZone { get; } = new()
+        {
+            { LedId.Mousepad1, SteelSeriesLedId.ZoneOne },
+            { LedId.Mousepad2, SteelSeriesLedId.ZoneTwo }
+        };
+
         /// <summary>
         /// Gets the mapping for 103-zone led strip devices (monitor).
         /// </summary>