feat: add celery & redis for background data processing

server/queue/celery_app.py

@@ -0,0 +1,16 @@
+from celery import Celery
+
+def create_celery():
+    celery = Celery(
+        "ethnograph",
+        broker="redis://redis:6379/0",
+        backend="redis://redis:6379/0",
+    )
+    celery.conf.task_serializer = "json"
+    celery.conf.result_serializer = "json"
+    celery.conf.accept_content = ["json"]
+    return celery
+
+celery = create_celery()
+
+from server.queue import tasks