是否可以让UseTransactionAttribute 可使用在 类上，让类里面所有方法都默认使用事务

## SmartSql version
4.1.25
## Database provider and version

## Steps to reproduce

## Expected result

> namespace SmartSql.DyRepository.Annotations
> {
> [AttributeUsage(AttributeTargets.Method||AttributeTargets.Class, AllowMultiple = false)]
> public class UseTransactionAttribute : Attribute
> {
> public IsolationLevel Level { get; set; } = IsolationLevel.Unspecified;
> }
> }

## Actual result

> namespace SmartSql.DyRepository.Annotations
> {
> [AttributeUsage(AttributeTargets.Method, AllowMultiple = false)]
> public class UseTransactionAttribute : Attribute
> {
> public IsolationLevel Level { get; set; } = IsolationLevel.Unspecified;
> }
> }

## Stack trace