Release v1.6.2

Automated release for version v1.6.2.

Changes in this release:
feat: enhance MainScreen UI and enable auto-updates by default

This commit updates the MainScreen TopAppBar to provide better context regarding item selection and total scan counts. It also sets automatic update checks to be enabled by default and temporarily disables the search list feature with a placeholder dialog.

Specific Changes:

• MainScreen UI:
  • MainScreen.kt:
    • Updated the TopAppBar to display a "selected count" (e.g., "5 selected") when in selection mode.
    • Added a circular badge next to the title to show the total number of scanned items when not in selection mode.
    • Redirected the search FAB click to show a new AlertDialog indicating the feature is temporarily unavailable.
• Settings & Defaults:
  • SettingsRepository.kt: Changed the default value for the AUTO_UPDATE_CHECK preference from false to true.
  • SettingsScreen.kt: Updated the default state in the SettingsScreen preview to reflect the enabled auto-update setting.
• Localization:
  • strings.xml (Default, EN, ES, NL): Added new strings for selected_count and the "Feature Unavailable" dialog title and text.