Register Cell2Sentence Presets (#2442)

* Register Cell2Sentence presets

* Address gemini comments

Author: laxmareddyp

keras_hub/src/models/gemma/gemma_presets.py

@@ -206,4 +206,26 @@
         },
         "kaggle_handle": "kaggle://keras/vaultgemma/keras/vault_gemma_1b_en/2",
     },
+    "c2s_scale_gemma_2_2b_en": {
+        "metadata": {
+            "description": (
+                "A 2 billion parameter, single-cell biology-aware model "
+                "built on the Gemma-2 architecture."
+            ),
+            "params": 2614341888,
+            "path": "gemma",
+        },
+        "kaggle_handle": "kaggle://keras/cell2sentence/keras/c2s_scale_gemma_2_2b_en/1",
+    },
+    "c2s_scale_gemma_2_27b_en": {
+        "metadata": {
+            "description": (
+                "A 27 billion parameter, single-cell biology-aware model "
+                "built on the Gemma-2 architecture."
+            ),
+            "params": 27227128320,
+            "path": "gemma",
+        },
+        "kaggle_handle": "kaggle://keras/cell2sentence/keras/c2s_scale_gemma_2_27b_en/1",
+    },
 }