feat: example of httpx async client

src/fastapi_app/lib/clients/httpx.py

@@ -0,0 +1,12 @@
+# Purpose: Provide an example of an async http client for the application
+import contextlib
+import typing
+
+import httpx
+
+
+@contextlib.asynccontextmanager
+async def get_http_client() -> typing.AsyncGenerator[httpx.AsyncClient, None]:
+    client = httpx.AsyncClient()  # Insert your own settings here
+    async with client as ac:
+        yield ac