- 增加 FreeSqlBuilder UseNameConvert 方法，类名、属性名都生效；

- 调整 FreeSqlBuilder，准备移除 UseEntityPropertyNameConvert/UseSyncStructureToLower/UseSyncStructureToUpper 方法；#260

FreeSql.Tests/FreeSql.Tests/UnitTest3.cs

@@ -247,7 +247,7 @@ namespace FreeSql.Tests
                 .UseAutoSyncStructure(true)
                 .UseGenerateCommandParameterWithLambda(true)
                 .UseLazyLoading(true)
-                .UseSyncStructureToUpper(true)
+                .UseNameConvert(FreeSql.Internal.NameConvertType.ToUpper)
                 .UseMonitorCommand(cmd => Trace.WriteLine("\r\n线程" + Thread.CurrentThread.ManagedThreadId + ": " + cmd.CommandText))
                 .Build());
             ib.Register("db3", () => new FreeSql.FreeSqlBuilder()