add video safety check

[Songyuanwei]

What does this PR do?

Fixes # (issue)

Adds # (feature)

1. add safety check for videos
2. extract safety chcek from examples/stable_diffusion_v2/tools to mindone/metrics

Before submitting

• [ ] 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?
• [ ] 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?
• [x] 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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