GTFS: Add file storage and service implementation

[ksharma-xyz]

TL;DR

Added GTFS static file download and storage functionality for NSW train data.

What changed?

• Integrated GTFS static module into the app and trip planner feature
• Added file storage implementations for both Android and iOS platforms
• Implemented crash reporting for file storage failures
• Added NSW GTFS service to download train data
• Disabled HTTP client logging in trip planner network module

How to test?

1. Launch the app
2. Navigate to the Saved Trips screen
3. Verify that GTFS data is downloaded and stored locally
4. Check device's file storage for saved GTFS files
5. Verify crash reporting works by simulating a file storage failure

Why make this change?

To enable offline access to NSW train schedule data by downloading and storing GTFS static files locally on the device. This will improve app reliability and reduce dependency on network connectivity for basic schedule information.

[ksharma-xyz]

• Add CsvReader #577
• DB: Add Sydney train stops table and queries #576
• IO: Move file storage and zip management to dedicated module #573
• GTFS: Add zip file extraction and storage system #572
• GTFS: Add file storage and service implementation #571 👈 (View in Graphite)
• main

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