[Feat] Diffusion Model(PixArtAlpha/StableDiffusion3) Support

[LRY89757]

📌 Checklist before creating the PR

• [ ] I have created an issue for this PR for traceability
• [x] The title follows the standard format: [doc/gemini/tensor/...]: A concise description
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📝 What does this PR do?

Support Stable Diffusion 3 for our ColossalAI InferenceEngine

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• [ ] My issue clearly describes the problem/feature/proposal, with diagrams/charts/table/code if possible
• [x] I have performed a self-review of my code
• [ ] I have added thorough tests.
• [ ] I have added docstrings for all the functions/methods I implemented

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