✨ feat(tests): add __init__.py and utils.py files to tests directory for test setup and utility functions

tests/utils.py

@@ -0,0 +1,8 @@
+def run_post(client, flow_id, headers, post_data):
+    response = client.post(
+        f"api/v1/process/{flow_id}",
+        headers=headers,
+        json=post_data,
+    )
+    assert response.status_code == 200, response.json()
+    return response.json()