SDXL: Some features used in customized version

[townwish4git]

What does this PR do?

Fixes # (issue)

1. record crop_coords_top_left of images in data preprocessing class CenterCrop

Adds # (feature) SDXL: Some features used in customized version

1. support save_path for merge_hccl.py
2. support saving ckpt only on rank0
3. shrink large images before other data preprocessing operations

P.S. These changes have been verified in customer‘s experiments.

Before submitting

• [x] This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• [x] Did you read the contributor guideline?
• [x] Did you make sure to update the documentation with your changes? E.g. record bug fixes or new features in What's New. Here are the documentation guidelines
• [x] Did you build and run the code without any errors?
• [ ] Did you report the running environment (NPU type/MS version) and performance in the doc? (better record it for data loading, model inference, or training tasks)
• [ ] Did you write any new necessary tests?

Who can review?

Anyone in the community is free to review the PR once the tests have passed. Feel free to tag members/contributors who may be interested in your PR.

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