Add two features which supports training PPO in one graphic card for large model and ChatGLM-6B model support

[yynil]

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📝 What does this PR do?

1. Add model support for ChatGLM-6B.
2. Add a video ram friendly trainer when training PPO model. One 3090ti with 24GB vram can finish the PPO training.
3. Add Peft reward model, so all stage-3 models are peft.
4. Add a support to preprocess texts to binary datasets to save the data process time.

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[Fazziekey]

@yynil hello, if you want to support more models, can you add all models class in https://github.com/hpcaitech/ColossalAI/tree/main/applications/Chat/coati/models?
you can make a dir glm in https://github.com/hpcaitech/ColossalAI/tree/main/applications/Chat/coati/models/glm

[Fazziekey]

I think this PR changes too many things, I think you can split it into three PR:

• add glm models: including Reward model, actor model, critic model and LMmodels;
• add datasets preprocess in https://github.com/hpcaitech/ColossalAI/tree/main/applications/Chat/coati/dataset
• add community example in https://github.com/hpcaitech/ColossalAI/tree/main/applications/Chat/examples/community

[yynil]

@yynil hello, if you want to support more models, can you add all models class in https://github.com/hpcaitech/ColossalAI/tree/main/applications/Chat/coati/models? you can make a dir glm in https://github.com/hpcaitech/ColossalAI/tree/main/applications/Chat/coati/models/glm

I'll create another branch to separate these changes.

[Fazziekey]

I add how to support your own model in this PR, #3579, please refer to it @yynil

[yynil]

Since the ChatGLM is not willing to release a smaller model to public to train a reward model, I'm suspending the support to ChatGLM. My Branch will then move to bloom because bloom has a very good small model to allow us train reward model much easier.

[binmakeswell]

Since the ChatGLM is not willing to release a smaller model to public to train a reward model, I'm suspending the support to ChatGLM. My Branch will then move to bloom because bloom has a very good small model to allow us train reward model much easier.

Thanks, you are welcome to share and update your PR.