Generate lib files when building for prod

Author: mugikhan

packages/powersync-op-sqlite/package.json

@@ -38,6 +38,7 @@
   ],
   "scripts": {
     "build": "bob build",
+    "build:prod": "bob build",
     "typecheck": "tsc",
     "lint": "eslint \"**/*.{js,ts,tsx}\"",
     "clean": "del-cli android/build example/android/build example/android/app/build example/ios/build lib"