broke out assets.py into an assets and sensors directory

user_code/definitions.py

@@ -7,10 +7,16 @@ from dagster import (
 )
 from dagster_duckdb import DuckDBResource
 
-import assets
+# Import asset modules
+from assets import config, gtfs_static, gtfs_realtime
+
+# Import sensor modules
+from sensors import gtfs_realtime as gtfs_rt_sensors
+
 from resources import MobilityDatabaseAPI
 
-all_assets = load_assets_from_modules([assets])
+# Load all assets from the modules
+all_assets = load_assets_from_modules([config, gtfs_static, gtfs_realtime])
 
 defs = Definitions(
     assets=all_assets,
@@ -20,7 +26,7 @@ defs = Definitions(
             target="*",
             default_status=DefaultSensorStatus.RUNNING,
         ),
-        assets.gtfs_rt_vehicles_sensor
+        gtfs_rt_sensors.gtfs_rt_vehicles_sensor,
     ],
     resources={
         "duckdb": DuckDBResource(