Add gradio to requirements.txt and add frontend demo

requirements.txt

@@ -6,4 +6,5 @@ python-multipart
 config
 PyGithub
 httpx
-pytest
+pytest
+gradio

scripts/app_start.sh

@@ -0,0 +1,3 @@
+# Run two commands in the background at the same time
+cd ../src
+python3 -m uvicorn index.main:app --reload & python3 app/main.py 

src/app/main.py

@@ -0,0 +1,14 @@
+import gradio as gr
+import requests
+
+def echo(message, history):
+    # Post the message to the server
+    response = requests.post("http://127.0.0.1:8000/api/chat/gpt3", data={"user_request": message})
+    # Return the response
+    llm_output = response.json()["result"]['content']
+
+    return llm_output
+
+demo = gr.ChatInterface(fn=echo, examples=["What is OpenAI?", "What is LLM?"], title="LLM Chatbot")
+
+demo.launch()