Miya Desktop 26.7.23

refactor: cleanup dead code, unify naming, remove wailsjs/runtime

- Rename Go module wails-app -> miya-desktop, update all imports
- Remove dead code: App.css, Home.jsx, About.jsx, Greet(), ProviderContext.jsx
- Remove local wailsjs/runtime, use @wailsio/runtime npm package
- Add React ErrorBoundary component
- Remove package-lock.json, unify on pnpm
- Fix tsconfig.node.json vite.config.ts -> vite.config.js
- Update wails.json name and build commands