feat(db,list): add database management command and improve detailed view

[umpire274]

🗄️ Database management

• Introduced a new db command for database lifecycle control:
  • librius db --init → initializes or resets the current database.
  • librius db --reset → alias of --init.
  • librius db --copy -f <FILE> → copies the database defined in librius.yaml to a new file.
• The database path is now automatically resolved from the configuration (`database: key).
• Added localized messages for all database operations.
• Fixed --copy flag behavior (no longer requires a value).

📚 Enhanced detailed list view

• Fixed incorrect alphabetical sorting of fields in list --id <ID> --details.
• Restored proper database field order:
  id, title, author, editor, year, isbn, language, pages, genre, summary, room, shelf, row, position, added_at.
• Added localized column headers (Field / Value) in vertical table view.
• Introduced new `--compact flag to hide empty fields in detailed mode.
• --compact now requires `--details to ensure logical CLI usage.

🧩 General

• Updated help messages and i18n translations.
• Improved CLI consistency and visual output formatting.

Linked Issue / Milestone

Closes milestone v0.5.1 – Database management & improved list details view