feat: enhance EvoBGP with new command-line options for the evobgp-agent, including a watch command for periodic configuration updates. Update go.mod with additional dependencies and improve Docker Compose setup for new services, including NATS and various worker components.

migrations/sqlite/000002_speaker_publish.down.sql

@@ -0,0 +1,2 @@
+-- SQLite cannot DROP COLUMN easily in older versions; no-op for dev rollback.
+SELECT 1;