added Taiwan regions

Author: NaluTripician

Microsoft.Azure.Cosmos/src/Regions.cs

@@ -374,5 +374,15 @@ public static class Regions
         /// Name of the Azure Spain Central region in the Azure Cosmos DB service.
         /// </summary>
         public const string SpainCentral = "Spain Central";
+
+        /// <summary>
+        /// Name of the Azure Taiwan North region in the Azure Cosmos DB service.
+        /// </summary>
+        public const string TaiwanNorth = "TaiwanNorth";
+
+        /// <summary>
+        /// Name of the Azure Taiwan Northwest region in the Azure Cosmos DB service.
+        /// </summary>
+        public const string TaiwanNorthwest = "TaiwanNorthwest";
     }
 }