Add feature to filter only isFavorite=true

[mrestivill]

Description

Currenly, it is possible to add a property to add isFavorite=true to the current filter.

Use Case

On config file or using variables add ImagesFavoriteOnly to select if this field is used to filter the images. Then run the application, only assets tagged with favorite will be shown.

Details

See the immich api search isFavorite field --> https://immich.app/docs/api/search-smart#isFavorite

Pre-Submission Checklist

• This is a feature request and not a bug report

• I have checked for related issues and checked the documentation

[rjhilgefort]

I'm interested in this as well. Specifically, I would love to have a slide show of "favorite" photos randomly from all time. Is this possible somehow?