feat: Implemented AutoZoom feature for Android

[sartajroshan]

#905

Summary

This PR introduces the Auto-Zoom feature to the mobile_scanner package on Android. The feature leverages ZoomSuggestionOptions from ML Kit to dynamically adjust the camera zoom level based on barcode detection, improving scanning accuracy and ease of use.

Key Changes

• Dynamically adjusts the camera's zoom level while respecting the device's maximum zoom capabilities.
• Introduced a new optional parameter, enableAutoZoom, in MobileScannerController for developers to control the feature.
• The default value for enableAutoZoom is false, ensuring no change in behavior for existing implementations unless explicitly enabled.

Usage

Developers can enable or disable the Auto-Zoom feature when creating a MobileScannerController. By default, the feature is disabled.

// Enable Auto-Zoom
final MobileScannerController controller = MobileScannerController(
  enableAutoZoom: true, // Enables dynamic zoom adjustment
);

// Disable Auto-Zoom (default behavior)
final MobileScannerController controller = MobileScannerController(
  enableAutoZoom: false, // Keeps zoom at the default level
);