Added Gradio integration tutorial

docs/my-website/docs/tutorials/gradio_integration.md

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+# Gradio Chatbot + LiteLLM Tutorial
+Simple tutorial for integrating LiteLLM completion calls with streaming Gradio chatbot demos
+
+### Install & Import Dependencies
+```python
+!pip install gradio litellm
+import gradio
+import litellm
+```
+
+### Define Inference Function
+Remember to set `model` and `api_base` as expected by the server hosting your LLM.
+```python
+def inference(message, history):
+    try:
+        flattened_history = [item for sublist in history for item in sublist]
+        full_message = " ".join(flattened_history + [message])
+        messages_litellm = [{"role": "user", "content": full_message}] # litellm message format
+        partial_message = ""
+        for chunk in litellm.completion(model="huggingface/meta-llama/Llama-2-7b-chat-hf",
+                                        api_base="x.x.x.x:xxxx",
+                                        messages=messages_litellm,
+                                        max_new_tokens=512,
+                                        temperature=.7,
+                                        top_k=100,
+                                        top_p=.9,
+                                        repetition_penalty=1.18,
+                                        stream=True):
+            partial_message += chunk['choices'][0]['delta']['content'] # extract text from streamed litellm chunks
+            yield partial_message
+    except Exception as e:
+        print("Exception encountered:", str(e))
+        yield f"An Error occured please 'Clear' the error and try your question again"
+```
+
+### Define Chat Interface
+```python
+gr.ChatInterface(
+    inference,
+    chatbot=gr.Chatbot(height=400),
+    textbox=gr.Textbox(placeholder="Enter text here...", container=False, scale=5),
+    description=f"""
+    CURRENT PROMPT TEMPLATE: {model_name}.
+    An incorrect prompt template will cause performance to suffer.
+    Check the API specifications to ensure this format matches the target LLM.""",
+    title="Simple Chatbot Test Application",
+    examples=["Define 'deep learning' in once sentence."],
+    retry_btn="Retry",
+    undo_btn="Undo",
+    clear_btn="Clear",
+    theme=theme,
+).queue().launch()
+```
+### Launch Gradio App
+1. From command line: `python app.py` or `gradio app.py` (latter enables live deployment updates)
+2. Visit provided hyperlink in your browser.
+3. Enjoy prompt-agnostic interaction with remote LLM server.
+
+### Recommended Extensions:
+* Add command line arguments to define target model & inference endpoints
+
+Credits to [ZQ](https://x.com/ZQ), for this tutorial.