feat(rules/link_implicit): implicit links parsing

[moki]

http://diplodoc.com would not be parsed as link without wrapping it in links syntax

e.g: [http://diplodoc.com](http://diplodoc.com) or <http://diplodoc.com>

playground link

most platforms have text that makes a link transformed into links automatically, creating expectations from users to have that feature out of the box.

look into implementing plugin that will parse text that looks like a link as link

be cautious of performance degradation.