[checkpoint] support huggingface style sharded checkpoint

[flybird11111]

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🚨 resolved #3463

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📝 What does this PR do?

support loading from and saving as HF sharded checkpoint.

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[FrankLeeeee]

Can you refactor your code according to the quality check here?
https://www.codefactor.io/repository/github/hpcaitech/colossalai/pull/3461