feat: add passenger information and settings components

- Introduced `PassengerInfo.tsx` for displaying trip details, including upcoming trips and fare information.
- Added `PassengerSettings.tsx` for managing user-defined important places and fare settings.
- Implemented validation functions for passenger settings in `passenger-settings.mjs`.
- Created utility functions for transliterating stop names in `transliteration.ts`.
- Developed weather hint functionality in `weather-hint.ts` to provide precipitation probabilities.
- Established a mock server for testing passenger-related features in `passenger-server.mjs`.
- Added comprehensive tests for passenger guide logic and transliteration functionality.

tsconfig.json

@@ -1,7 +1,7 @@
 {
   "compilerOptions": {
     "target": "ES2022", "lib": ["ES2022", "DOM", "DOM.Iterable"],
-    "module": "ESNext", "moduleResolution": "Bundler", "jsx": "react-jsx",
+    "module": "ESNext", "moduleResolution": "Bundler", "jsx": "react-jsx", "allowImportingTsExtensions": true,
     "strict": true, "noEmit": true, "skipLibCheck": true,
     "allowJs": true, "esModuleInterop": true, "resolveJsonModule": true,
     "noUnusedLocals": true, "noUnusedParameters": true