transfer basic app to Vuetify app
- create vuetify
- in vite.config, define appDir, projDir, base, aliases
- in package.json, add chart.js
- in components, update HelloWorld.vue with app's index HTML, JS and CSS, add dev-overlay.js and graph-view.ts
- add Vuetify public and src folders (assets, components, layouts, pages, plugins, router, stores, styles)
- update README
- ESLint, pinia, sass