* refactor: migrate all Hive boxes to Isar database.
* feat: Use new search API and GridView for Places / Locations.
* refactor: store backup settings on device.
* feat: Explore favorites, recently added, videos, and motion photos.
* fix: Fixed mobile app not reporting webm MIME type.
* feature: Hardening synchronization mechanism + Pull to refresh.
* feat: improve explore page and allow metadata search.
* feat: Allow headers to upload large file in chunk.