feat: Convert app, server, worker ts files to JS

packages/backend/src/server.js

@@ -0,0 +1,18 @@
+import app from './app';
+import appConfig from './config/app';
+import logger from './helpers/logger';
+import telemetry from './helpers/telemetry';
+
+telemetry.setServiceType('main');
+
+const server = app.listen(appConfig.port, () => {
+  logger.info(`Server is listening on ${appConfig.baseUrl}`);
+});
+
+function shutdown(server) {
+  server.close();
+}
+
+process.on('SIGTERM', () => {
+  shutdown(server);
+});