nit: mark org field as optional in typecast

Co-authored-by: K.J. Valencik <kjvalencik@gmail.com>

Author: dherman

pkgs/create-neon/src/bin/create-neon.ts

@@ -42,7 +42,7 @@ try {
   const [pkg] = opts._unknown;
   const { org, basename } = /^((?<org>@[^/]+)\/)?(?<basename>.*)/.exec(pkg)
     ?.groups as {
-    org: string;
+    org?: string;
     basename: string;
   };
   const fullName = org ? `${org}/${basename}` : basename;