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f64fa949 - [Feature] AutoModel can load components using model_index.json (#11401)

[Feature] AutoModel can load components using model_index.json (#11401) * update * update * update * update * addressed PR comments * update * addressed PR comments * added tests * addressed PR comments * updates * update * addressed PR comments * update * fix style --------- Co-authored-by: Sayak Paul <spsayakpaul@gmail.com> Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>