This PR adds a comprehensive model card for the K2Sight model. It includes:
- A summary of the model and its purpose.
- Links to the paper, project page, GitHub repository, and a Hugging Face Space demo.
- Relevant metadata: `apache-2.0` license, `transformers` library, and `zero-shot-object-detection` pipeline tag.
- A practical Python code usage example for quick model inference.
- A citation for the work.
