initial with npm install

run with npm run dev

Component does not work yet when written in pug. Run fails with 'Premature end of file' error.

To reproduce:

replace src/c-label.riot contents with src/c-label.riot.pug

see attempt to add preprocessor in vite.config.js

Riot-Vite inspired by https://dev.to/steeve/riotjs-vitejs-tutorial-fpn