Update Gbase

Src/Asp.NetCore2/SqlSugar.GBaseCore/GBase/DbMaintenance/GBaseDbMaintenance.cs

@@ -377,6 +377,10 @@ where a.tabtype in ('V')  and not (a.tabname like 'sys%') AND a.tabname <>'dual'
         public override bool CreateDatabase(string databaseName, string databaseDirectory = null)
         {
             throw new NotSupportedException();
+        }
+        public override void AddDefaultValue(EntityInfo entityInfo)
+        {
+            
         }
         public override bool CreateTable(string tableName, List<DbColumnInfo> columns, bool isCreatePrimaryKey = true)
         {