implemented esbuild and cleaned up stuff

cobalt should now load even faster

package.json

@@ -1,7 +1,7 @@
 {
     "name": "cobalt",
     "description": "probably the friendliest social media downloader yet",
-    "version": "2.2.6",
+    "version": "2.2.7",
     "author": "wukko",
     "exports": "./src/cobalt.js",
     "type": "module",
@@ -24,6 +24,7 @@
     "dependencies": {
         "cors": "^2.8.5",
         "dotenv": "^16.0.1",
+        "esbuild": "^0.14.51",
         "express": "^4.17.1",
         "express-rate-limit": "^6.3.0",
         "ffmpeg-static": "^5.0.0",