Add layouts for author pages

[hawkeye116477]

Problem or enhancement idea

Authors of posts aren't visible.

Proposed solution

Layout for section with mentioned authors of posts with button to read more information about authors.
On single author's site should be some short description about author, avatar/photo, links to social media and list of their posts.
There should be also link to author's page on their posts.

Additional context

Example => https://www.netlify.com/blog/2018/07/24/hugo-tips-how-to-create-author-pages/.