WordPress RSS feed images

[marispulk]

Is your feature request related to a problem? Please describe.
WordPress doesn't display images in RSS feed.

Describe the solution you'd like
Complement WordPress RSS feed so that there would be image added to every post.

Under Smaily for WooCommerce configuration should be option to:

• Activate this feature
• The dimensions of the image would be displayed from the drop-down menu, according to the predefined sizes of WordPress.

Additional context
The solution can be based on this plugin: https://wordpress.org/plugins/rss-with-images/
*We can't use this plugin itself, as it works only on new posts, so only new posts would have images in RSS feed.