chore: only publish necessary files

Author: JoaoPedroAS51

Diff for: package.json

@@ -4,6 +4,10 @@
   "description": "💎 Elegant and simple way to build requests for REST API",
   "main": "build/index.js",
   "types": "./index.d.ts",
+  "files": [
+    "build",
+    "index.d.ts"
+  ],
   "scripts": {
     "build": "babel src -d build",
     "lint": "eslint --ext .js .",