Installed cross-env to support quickly adding ENV variables to builder

package.json

@@ -19,6 +19,7 @@
         "@types/node": "^22.15.29",
         "@vitest/coverage-v8": "^3.2.0",
         "cheerio": "^1.0.0",
+        "cross-env": "^10.0.0",
         "jsdom": "^26.1.0",
         "sass": "^1.89.1",
         "svelte": "^5.33.14",