add columns for reply_to and reply and create tables for tracking service usage and enforce limit according to the subscription plan

packages/db/migrations/0172.undo.service_usage.sql

@@ -0,0 +1,15 @@
+-- Type: UNDO
+-- Name: service_usage
+-- Description: Create table for tracking service usage and enforce limit
+
+BEGIN;
+
+DROP TABLE IF EXISTS omnivore.service_usage;
+
+DROP TABLE IF EXISTS omnivore.subscription_plan;
+
+ATLER TABLE omnivore.received_emails
+    DROP COLUMN IF EXISTS reply_to,
+    DROP COLUMN IF EXISTS reply;
+
+COMMIT;