feat: add file move and trash retention

migrations/003_trash_retention.up.sql

@@ -0,0 +1,7 @@
+ALTER TABLE files_nodes
+    ADD COLUMN IF NOT EXISTS trashed_at TIMESTAMPTZ,
+    ADD COLUMN IF NOT EXISTS purge_after TIMESTAMPTZ;
+
+CREATE INDEX IF NOT EXISTS files_nodes_purge_after_idx
+    ON files_nodes(purge_after)
+    WHERE purge_after IS NOT NULL;