re-structure the project

package.json

@@ -16,7 +16,8 @@
     "url": "https://transfer.hft-stuttgart.de/gitlab/m4lab_tv1/user-account.git"
   },
   "scripts": {
-    "start": "nodemon app.ts",
+    "start:dev": "nodemon ./src/app.ts",
+    "start": "nodemon ./built/app.js",
     "build": "tsc -build",
     "clean": "tsc -build --clean",
     "test": "jest",