Add Qwen/QVQ-72B-Preview model from siliconflow

[senseb]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

Since siliconflow has release it's Qwen/QVQ-72B-Preview model, i want to add it in dify.

2. Additional context or comments

No response

3. Can you help us with this feature?

• I am interested in contributing to this feature.