🤩 [FEATURE] More useful experiment suffix name

[ZhikangNiu]

🤩 Features description [Please make everyone to understand it]

When we run exps with same setting, the swanlab will log every exp with number suffix name. For example, exp,exp-2,exp-3 ,exp-4 and exp-5.

If we have a more useful suffix name, it'll be better. We can use current time as suffix name.

you can study from: https://hydra.cc/docs/configure_hydra/workdir/

[Zeyi-Lin]

用以下规则：

1. 如果未填写experiment_name，则默认名为exp，最终的实验名为：exp-2024-01-02_14-55-36
2. 如果填写了experiment_name，最终的实验名为f{experiment_name}-2024-01-02_14-55-36
3. 如果重复，则加-1
4. 默认加上时间戳

增强：

1. swanlab.init有一个参数，可以设置加后缀的规则（如时间戳格式、None为取消加时间戳后缀等）