Update engines.json

engines.json

@@ -13,5 +13,10 @@
         "url": "https://huggingface.co/QuantFactory/Phi-3-mini-128k-instruct-GGUF/resolve/main/Phi-3-mini-128k-instruct.Q4_K_M.gguf",
         "name": "phi-3.5-mini-instruct",
         "n_batch": 32
-    }
+    },
+    {
+        "url": "https://huggingface.co/MaziyarPanahi/gemma-2b-GGUF/resolve/main/gemma-2b.Q4_K_M.gguf",
+        "name": "gemma-2b",
+        "n_batch": 48
+    },
 ]