add: hub template

hub/docker/db/structure.sql

@@ -0,0 +1,11 @@
+CREATE TABLE processed_agent_data (
+    id SERIAL PRIMARY KEY,
+    road_state VARCHAR(255) NOT NULL,
+    user_id INTEGER NOT NULL,
+    x FLOAT,
+    y FLOAT,
+    z FLOAT,
+    latitude FLOAT,
+    longitude FLOAT,
+    timestamp TIMESTAMP
+);