feat: add tensorboard support

[Franklalalala]

Add TensorBoard Support. And it has the following features:

• add a new parameter in train_options section, use_tensorboard.
• Set true to use tensorboard. It will record iteration error once every 25 iterations, epoch error once per epoch.
• There are tree types of error will be recorded. train_loss_iter is iteration loss, train_loss_last is the error of the last iteration in an epoch, train_loss_mean is the mean error of all iterations in an epoch.
• Learning rates are tracked as well.
• A folder named tensorboard_logs will be created in the working directory. Use tensorboard --logdir=tensorboard_logs to view the logs.

Fix #207

[QG-phy]

@Franklalalala 这个单元测试没过。你修一下代码~应该应该加一个安装库的依赖就好。另外，上传一个例子吧。

[QG-phy]

安装的问题，我已经解决了。 @Franklalalala 请你上传一个例子吧。另外这个PR的描述（你看最上面）我修改了一下留下了XXX的待补充，你补充说明一下这个PR支持了什么，好吧。

[Franklalalala]

添加了测试案例在 example 里， argcheck 做了相应的修改，可以控制是否添加 tensorboard，默认是否，不添加