Added a model card (#1)

- Added a model card (721b713a9a5b0ec2b75492674c5f192d34f9426e)
- Update README.md (5ac75166a49bb3589f07b0cbaae3332016fa55a5)


Co-authored-by: Anush Shetty <Anush008@users.noreply.huggingface.co>

README.md

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+---
+license: apache-2.0
+pipeline_tag: sentence-similarity
+---
+
+ONNX port of [thenlper/gte-small](https://huggingface.co/thenlper/gte-small) for text classification and similarity searches.