Ability to generate tiny placeholder per conversion or per media render.

[ondroftw]

Hi, I think It would be really nice to have the option to define if tiny placeholder should be generated per conversion.

Somehing like:

$this->addMediaConversion('webp')
         ->fit(Manipulations::FIT_MAX, 2304, 1296)
         ->nonOptimized()
         ->format('webp')
         ->withTinyPlaceholder() // this line here
         ->withResponsiveImages();

Or even better, per media render. somehing like this:

$media->img('conversion')->withTinyPlaceholder()->lazy()

The use case could be for example:
We have a slider on homepage, which is html markup with images rendered with spatie/laravel-medialibrary that is being processed by javascript after page load, and this causes that sometimes the tiny placeholder isn't replaced with the actual image. So instead of ditching the tiny placeholder functionality completely because of that one slider, I could just enable tiny placeholder per media render.

This should be possible If I understand the source code correctly, right ? Should be pretty easy to implement too. What do you think ?