Implements the “On This Day” feature and improves media viewer metadata

This release introduces the long-awaited “On This Day” feature, allowing users to rediscover memories from previous years on the current date.

Key changes and improvements include:

New feature: “On This Day” view:

• A dedicated “On This Day” section has been added to the home screen.
• Photos are intelligently fetched from the Immich server, showing only those taken on the current day and month throughout
  all available previous years.
• Visual grouping of photos by year, with clear headers for each year, providing an organized and nostalgic browsing experience.

Media viewer improvements:

• Replaced the generic “X/Y” photo counter in the media viewer with the exact date (DD/MM/YYYY) the photo was taken. This provides more relevant context for each image.
• Date format improved in the media viewer to “dd/mm/yyyy.”

Internal improvements and fixes:

• The “On This Day” UI architecture was refactored to prevent crashes, correctly implementing Leanback's
  BrowseSupportFragment and RowsSupportFragment patterns.
• Ensured robust data retrieval for “On This Day” assets, including filters to ensure date accuracy
• Fixed PreferenceManager initialization to prevent runtime hangs.
• Resolved build issues related to signing configurations, enabling successful generation of the release.