Update app.py

app.py

@@ -1,6 +1,8 @@
 # Import necessary packages
 import os 
 from ibm_watson_machine_learning.foundation_models import Model
+from ibm_watson_machine_learning.metanames import GenTextParamsMetaNames as GenParams
+from ibm_watson_machine_learning.foundation_models.utils.enums import ModelTypes, DecodingMethods
 import gradio as gr
 
 # Securely access the API key and project ID from environment variables