feat: improve codequality and CI (#25)

* feat: improve codequality and CI

tests/test_init.py

@@ -0,0 +1,17 @@
+import pytest
+from fastapi import APIRouter
+
+from .. import nostrrelay_ext, nostrrelay_start, nostrrelay_stop
+
+
+# just import router and add it to a test router
+@pytest.mark.asyncio
+async def test_router():
+    router = APIRouter()
+    router.include_router(nostrrelay_ext)
+
+
+@pytest.mark.asyncio
+async def test_start_and_stop():
+    nostrrelay_start()
+    nostrrelay_stop()