feat(smartmigration): add initial smartmigration package with MongoDB and S3 migration runner

ts/logger.ts

@@ -0,0 +1,19 @@
+import * as plugins from './plugins.js';
+
+/**
+ * Module-scoped Smartlog singleton. Users may pass their own logger via
+ * `ISmartMigrationOptions.logger` to override this default.
+ */
+export const logger = new plugins.smartlog.Smartlog({
+  logContext: {
+    company: 'Lossless GmbH',
+    companyunit: 'push.rocks',
+    containerName: 'smartmigration',
+    environment: 'production',
+    runtime: 'node',
+    zone: 'pushrocks',
+  },
+  minimumLogLevel: 'info',
+});
+
+logger.addLogDestination(new plugins.smartlogDestinationLocal.DestinationLocal());