feat: add status to subscriptions

migrations/20240304110745_add_status_to_subscriptions.sql

@@ -0,0 +1,2 @@
+-- Add Status Column To Subscriptions Table
+ALTER TABLE subscriptions ADD COLUMN status TEXT NULL;

migrations/20240304195803_make_status_not_null_in_subscriptions.sql

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+-- Make Status Not Null In Subscriptions
+-- We wrap the whole migration in a transaction to make sure
+-- it succeeds or fails atomically.
+BEGIN;
+-- Backfill `status` for historical entries
+UPDATE subscriptions
+SET status = 'confirmed'
+WHERE status IS NULL;
+-- Make `status` mandatory
+ALTER TABLE subscriptions ALTER COLUMN status SET NOT NULL;
+COMMIT;