Flag is a wonderful Drupal module that let you easily create Call to Action buttons with option for being activate or inactive. It sounds simple but yet it's very powerful. Many websites now implement Flags to let users Bookmark content, Add article to favourites, Follow other users... etc. There are potentially infinite use cases for Flags.
However, this module was missing a crucial functionality: to add a Score to a Flag. Adding Score on top of Flag lets you create even more powerful component - such as Voting links to rate content (see screenshots).
This is why I have created this contrib module: Flag Rating for Drupal 8.
I strongly recommend you to try the module before pushing to production as it is very new and NSFW yet.
Feel free to open a bug on the module page if you find issues while using flag_rating on your website.
Hope you'll enjoy it... Get ready to vote!