feat(app): add get_dad_joke()

Credits: https://huggingface.co/spaces/Agents-MCP-Hackathon/llm-can-tell-funny-jokes

app.py

@@ -1,4 +1,5 @@
 import gradio as gr
+import requests
 
 def greet(name: str) -> str:
     """
@@ -15,5 +16,14 @@ def greet(name: str) -> str:
         return "Name is too long!"
     return "Hello " + name + "!!"
 
+def get_dad_joke():
+    headers = {"Accept": "application/json"}
+    response = requests.get("https://icanhazdadjoke.com/", headers=headers)
+    if response.status_code == 200:
+        data = response.json()
+        return data.get("joke", "No joke found.")
+    else:
+        return "Failed to retrieve a joke."
+    
 demo = gr.Interface(fn=greet, inputs="text", outputs="text")
 demo.launch(mcp_server=True)