feat: add lucy-2.1-vton batch API support

[AdirAmsalem]

Summary

lucy-2.1-vton (virtual try-on) previously only supported realtime streaming. This adds batch/queue API support, so users can submit longer video try-on jobs asynchronously.

• Registers lucy-2.1-vton and lucy-vton-latest as video (batch) models
• Adds a video_tryon.py example

Usage

result = await client.queue.submit_and_poll({
    "model": models.video("lucy-2.1-vton"),
    "prompt": "wear this outfit",
    "data": open("person_video.mp4", "rb"),
    "reference_image": open("garment.png", "rb"),
})

---

Note

Low Risk
Low risk: this primarily adds new model identifiers/definitions plus tests and an example script, without changing existing model behavior or core request logic.

Overview
Adds batch/queue API support for virtual try-on by registering lucy-2.1-vton and the lucy-vton-latest alias as models.video(...) entries (new /v1/jobs/... endpoints) alongside existing realtime support.

Includes a new examples/video_tryon.py CLI demonstrating how to submit and poll a try-on job with a reference garment image, and extends tests/test_models.py to cover the new video models (plus updates uv.lock version metadata).

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