Add ethanhs/xgen-7b-8k-guanaco to eval queue

ethanhs/xgen-7b-8k-guanaco_eval_request_False_False_False.json

@@ -0,0 +1 @@
+{"model": "ethanhs/xgen-7b-8k-guanaco", "base_model": "", "revision": "main", "private": false, "8bit_eval": false, "is_delta_weight": false, "status": "PENDING", "submitted_time": "2023-07-23T10:57:41Z"}