server-esm: Fix some imports in app.ts

Author: eliandoran

src/app.ts

@@ -1,9 +1,9 @@
-import express = require('express');
-import path = require('path');
-import favicon = require('serve-favicon');
-import cookieParser = require('cookie-parser');
-import helmet = require('helmet');
-import compression = require('compression');
+import express from "express";
+import path from "path";
+import favicon from "serve-favicon";
+import cookieParser from "cookie-parser";
+import helmet from "helmet";
+import compression from "compression";
 import sessionParser from "./routes/session_parser.js";
 import utils from "./services/utils.js";