Add option for automatic loading="eager" on above-the-fold images

Hi bricks team @thomas and @Matej.

Currently, Bricks provides the Lazy Load Offset option, which is very useful for optimizing image loading.
However, there is no built-in way to automatically set loading="eager" for above-the-fold images.

:point_right: Suggested solution:

Add a global toggle in the Performance settings. When this toggle is enabled, any image that falls within the configured Lazy Load Offset should automatically be rendered with loading="eager" instead of lazy, ensuring that above-the-fold images load immediately while maintaining lazy loading for the rest of the content.

:white_check_mark: Benefit:

  • Improves LCP (Largest Contentful Paint) score by ensuring key above-the-fold images load immediately.
  • Still keeps the performance benefit of lazy loading for other images.

Best regards