Reusable images

[dziudek]

• [ ] Add additional section under file manager which points to media/posts/common catalog
• [ ] During upload images to this catalog the responsive images should be created automatically
• [ ] Add in the featured image option to select common image
• [ ] Add popup for common image selection (with thumbnails)
• [ ] In TinyMCE - add button to select common images
• [ ] In Markdown - handle support for common images
• [ ] In Block Editor - handle support for common images in the gallery and image block
• [ ] Change post content preparation to handle new common media directory
• [ ] Check sitemaps and other places for proper handling of the new URLs

[Feriman22]

I wanted to request the same now :)

+1 to implement this feature.