Add heegyu/llama-2-ko-7b-chat to eval queue

heegyu/llama-2-ko-7b-chat_eval_request_False_float16_Original.json

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+{"model": "heegyu/llama-2-ko-7b-chat", "base_model": "", "revision": "main", "private": false, "precision": "float16", "weight_type": "Original", "status": "PENDING", "submitted_time": "2023-09-27T06:17:19Z", "model_type": "\u2b55 : instruction-tuned"}