Add PremiumRS value to DatabaseEdition enum

Author: hshihMS

src/ResourceManager/Sql/Commands.Sql/Database/Model/DatabaseEdition.cs

@@ -53,6 +53,11 @@ public enum DatabaseEdition
         /// Free database edition.  Reserved for special use cases/scenarios.
         /// </summary>
         Free = 8,
+
+        /// <summary>
+        /// A database PremiumRS edition
+        /// </summary>
+        PremiumRS = 9,        
     }
 }