Introduce versioning clock to timer system

ts/sql/migrations/1150-expire-timer-version.ts

@@ -0,0 +1,30 @@
+// Copyright 2024 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+import type { Database } from '@signalapp/better-sqlite3';
+import type { LoggerType } from '../../types/Logging';
+
+export const version = 1150;
+
+export function updateToSchemaVersion1150(
+  currentVersion: number,
+  db: Database,
+  logger: LoggerType
+): void {
+  if (currentVersion >= 1150) {
+    return;
+  }
+
+  db.transaction(() => {
+    db.exec(`
+      -- All future conversations will start from '1'
+      ALTER TABLE conversations
+        ADD COLUMN expireTimerVersion INTEGER NOT NULL DEFAULT 1;
+
+      -- All current conversations will start from '2'
+      UPDATE conversations SET expireTimerVersion = 2;
+    `);
+
+    db.pragma('user_version = 1150');
+  })();
+  logger.info('updateToSchemaVersion1150: success!');
+}