Print helpful OpenAI-compatible server info

Example:

````shell
(oi_dev) λ interpreter --serve --model gpt-4o-mini --auto-run
Starting OpenAI-compatible server...

============================================================
Open Interpreter API Server
============================================================

To use with an OpenAI-compatible client, configure:
  - API Base:     http://127.0.0.1:8000
  - API Path:     /chat/completions
  - API Key:      (any value, authentication not required)
  - Model name:   (any value, ignored)

NOTE: The server will use the model configured in --model
      Currently using: gpt-4o-mini
============================================================
````

Author: endolith

interpreter/interpreter.py

@@ -1073,6 +1073,21 @@ def server(self):
         # Create and start server
         server = Server(self)
         try:
+            host = server.host
+            port = server.port
+
+            print("\n" + "=" * 60)
+            print(f"Open Interpreter API Server")
+            print("=" * 60)
+            print("\nTo use with an OpenAI-compatible client, configure:")
+            print(f"  - API Base:     http://{host}:{port}")
+            print(f"  - API Path:     /chat/completions")
+            print(f"  - API Key:      (any value, authentication not required)")
+            print(f"  - Model name:   (any value, ignored)")
+            print("\nNOTE: The server will use the model configured in --model")
+            print(f"      Currently using: {self.model}")
+            print("=" * 60 + "\n")
+
             server.run()
         except KeyboardInterrupt:
             print("\nShutting down server...")