major refactor

core/db/__init__.py

@@ -0,0 +1,19 @@
+from .assets import (
+    create_asset,
+    delete_asset,
+    get_asset,
+    get_asset_filenames,
+    list_assets,
+    update_asset,
+)
+from .jobs import (
+    create_job,
+    get_job,
+    list_jobs,
+    update_job,
+    update_job_fields,
+)
+from .presets import (
+    get_preset,
+    list_presets,
+)