Added richer station metadata and status handling to match the Amtrak API payload. This commit introduces new station fields for name, timezone, schedule/actual timings, platform, and status, along with extra train row properties for origin and arrival/departure details used by the UI.
- Went with the popular Virtual Railfan ones first.
- Moved the error message to its own dedicated space so it doesn't pop up out of nowhere
- Fixed a few typos
- Replace the placeholder window content with ContentView and implement a basic station lookup UI.
- Added a station code TextField, Refresh button that triggers an async load, loading indicator, and error message display. Introduces a Table for TrainStatusRow with columns for number, route, on-time and platform.
- Started plumbing for row population (work in progress).
- Also tweaked window title and fixes station comment (Ashland).
