created_ad and published_at are not added in frontmatter of generated markdown when creating a post #26
Description
Describe the bug
created_ad and published_at are not added in frontmatter of generated markdown when creating a post. when the sync-posts is launched or run by crontab is throws an error
when creating a new blog post, add the created_ad and published_at.
Nota : for the published_at this hasn't to be mandatory because a post can still as a draft without data of publication