Add workers:validate script to package.json

Added 'workers:validate' script to package.json.

package.json

@@ -15,6 +15,7 @@
     "guides:update": "tsx scripts/commands/guides/update.ts",
     "guides:export": "tsx scripts/commands/guides/export.ts",
     "workers:load": "tsx scripts/commands/workers/load.ts",
+    "workers:validate": "tsx scripts/commands/workers/validate.ts"
     "grab": "tsx scripts/commands/epg/grab.ts",
     "lint": "npx eslint \"{scripts,tests,sites}/**/*.{ts,mts,js}\"",
     "test": "cross-env TZ=Pacific/Nauru npx jest --runInBand",