feat: Add cancellation effective date to subscriptions

packages/backend/src/db/migrations/20230411203412_add_cancellation_effective_date_to_subscriptions.ts

@@ -0,0 +1,18 @@
+import { Knex } from 'knex';
+import appConfig from '../../config/app';
+
+export async function up(knex: Knex): Promise<void> {
+  if (!appConfig.isCloud) return;
+
+  return knex.schema.table('subscriptions', (table) => {
+    table.date('cancellation_effective_date');
+  });
+}
+
+export async function down(knex: Knex): Promise<void> {
+  if (!appConfig.isCloud) return;
+
+  return knex.schema.table('subscriptions', (table) => {
+    table.dropColumn('cancellation_effective_date');
+  });
+}