New Progress area, global stats, and faster route data

Highlights

• Added a new Progress area with current progress, weekly progress, records, achievements, total stats, and a next mission.
• Added global statistics for walked streets, distance, steps, and progress across cities.
• Moved route, planned route, and favorite place data to Core Data with migration support.

This update makes progress, route data, and street statistics clearer, faster, and easier to trust across different cities.

What changed in Streets 4.7.25

• Added a new Progress area with current progress, weekly progress, records, achievements, total stats, and a next mission.
• Added global statistics for walked streets, distance, steps, and progress across cities.
• Fixed cases where progress appeared correctly in one city but not another.
• Improved Total Stats and fixed mismatches between statistics and explored streets.
• Moved route, planned route, and favorite place data from UserDefaults to Core Data.
• Added migration support to preserve existing data during the storage upgrade.
• Improved route line styling and map loading.
• Removed the gray map overlay.