feat: add x-response-time response header 🤖

Signed-off-by: Vinayak Kulkarni <19776877+vinayakkulkarni@users.noreply.github.com>

Author: vinayakkulkarni

package-lock.json

@@ -39,6 +39,7 @@
     "pbf": "3.2.1",
     "proj4": "2.8.1",
     "request": "2.88.2",
+    "response-time": "^2.3.2",
     "sanitize-filename": "1.6.3",
     "sharp": "0.31.3",
     "tileserver-gl-styles": "2.0.0"

package.json

@@ -15,6 +15,7 @@ import express from 'express';
 import handlebars from 'handlebars';
 import SphericalMercator from '@mapbox/sphericalmercator';
 const mercator = new SphericalMercator();
+import responseTime from 'response-time';
 import morgan from 'morgan';
 import { serve_data } from './serve_data.js';
 import { serve_style } from './serve_style.js';
@@ -48,6 +49,7 @@ function start(opts) {
     fonts: {},
   };
 
+  app.use(responseTime({ suffix: false }));
   app.enable('trust proxy');
 
   if (process.env.NODE_ENV !== 'test') {