added avatar support in chat

app_dialogue.py

@@ -71,6 +71,8 @@ PROCESSOR = AutoProcessor.from_pretrained(
     token=API_TOKEN,
 )
 
+BOT_AVATAR = "IDEFICS_logo.png"
+
 logging.basicConfig(level=logging.INFO)
 logger = logging.getLogger()
 
@@ -375,6 +377,7 @@ with gr.Blocks(title="IDEFICS Playground", theme=gr.themes.Base()) as demo:
             label="IDEFICS",
             visible=True,
             height=750,
+            avatar_images=[None, BOT_AVATAR]
             #                 value=[
             #                     [
             #                         (