add files to publish

Author: dsadhanala

package.json

@@ -46,5 +46,11 @@
   },
   "engines": {
     "node": ">=12.0.0"
-  }
+  },
+  "files": [
+    "lib/**/*",
+    "LICENSE",
+    "package.json",
+    "README.md"
+  ]
 }