Add gemma models and token statistics

routers/powerpoint.py

@@ -42,6 +42,8 @@ class MultimodalModel(str, Enum):
     gemini_20_flash = "gemini-2.0-flash"
     gemini_20_flash_lite = "gemini-2.0-flash-lite"
     gemini_25_pro = "gemini-2.5-pro"
+    gemma_3_4b = "gemma-3-4b-it"
+    gemma_3_12b = "gemma-3-12b-it"
 
 class TemplateType(str, Enum):
     single_graph = "single_graph"
@@ -506,7 +508,7 @@ async def image_to_pptx(
     """
     try:
         # Get available model
-        model = get_available_model()
+        #model = get_available_model()
         
         # Get template generator
         template_generator = TEMPLATE_GENERATORS.get(template)
@@ -531,6 +533,8 @@ async def image_to_pptx(
                 'response_schema': template_generator.get_response_schema(),
             }
         )
+        # Display input/output tokens
+        print(response.usage_metadata)
         
         # Parse the response
         presentation_data = template_generator.get_response_schema().model_validate(json.loads(response.text))