fix: Fix installation of JS packages, prevent silent failures (closes #22)

[ElMassimo]

Description 📖

This pull request fixes a problem in the installation script, caused by an incorrect npx command.

The ni package has multiple binaries, so it's necessary to disambiguate which command to run.

Also, it adds the --no-install flag when running npx, ensuring build and dev commands fail early if the packages have not been installed.

Additional information is now logged in bin/vite info, to simplify debugging.

New Errors 📜

Building with Vite ⚡️
Build with Vite failed:
npm ERR! canceled

❌ Check that vite and vite-plugin-ruby are in devDependencies and have been installed.