added a joker tool to test

app.py

@@ -9,14 +9,14 @@ from Gradio_UI import GradioUI
 
 # Below is an example of a tool that does nothing. Amaze us with your creativity !
 @tool
-def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return type
+def joker(first_name:str, last_name:int)-> str: #it's import to specify the return type
     #Keep this format for the description / args / args description but feel free to modify the tool
-    """A tool that does nothing yet 
+    """Tells a joke to make someone laugh. It'll address the audience by name given.
     Args:
-        arg1: the first argument
-        arg2: the second argument
+        first_name: the first name of the audience
+        fast_name: the last name of the audience
     """
-    return "I'll be building something here soon!"
+    return f"Hi {first_name} {last_name} heres a joke and now laugh!!!"
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str: