feat: use a custom build js step instead of all the dependencies (#53)

Reviewed-on: #53

package.json

@@ -4,11 +4,15 @@
   "description": "Deploys screeps code to the official game or an pirvate server.",
   "main": "index.js",
   "scripts": {
-    "start": "node index.js"
+    "start": "node index.js",
+    "build": "ncc build index.js -o dist --external utf-8-validate --external bufferutil"
   },
   "dependencies": {
     "@actions/core": "^1.11.1",
     "glob": "^11.0.1",
     "screeps-api": "^1.7.2"
+  },
+  "devDependencies": {
+    "@vercel/ncc": "^0.38.4"
   }
 }