doc: add example

Author: observerw

examples/handle_message.py

@@ -0,0 +1,26 @@
+from __future__ import annotations
+
+from typing import override
+
+import anyio
+
+import lsp_client
+from lsp_client import lsp_type
+from lsp_client.clients.pyrefly import PyreflyClient
+
+lsp_client.enable_logging()
+
+
+class CustomClient(PyreflyClient):
+    @override
+    async def receive_log_message(self, noti: lsp_type.LogMessageNotification) -> None:
+        print(f"✨ Log Message: {noti.params.message}")
+
+
+async def main():
+    async with CustomClient() as client:
+        print(client)
+
+
+if __name__ == "__main__":
+    anyio.run(main)