Fix npm package missing types (#1167)

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

src/extensions/npm/extensions/package.json

@@ -6,6 +6,9 @@
   "copyright": "© 2020, Mirantis, Inc.",
   "license": "MIT",
   "types": "api.d.ts",
+  "files": [
+    "api.d.ts"
+  ],
   "author": {
     "name": "Mirantis, Inc.",
     "email": "info@k8slens.dev"