Add Meta and Slug MVC plugin

Slug plugin use for make URL from title or selected text : 
input : This is my <b>TEst</b> title
output : this-is-my-test-title

Meta plugin use for make meta keyword and meta description from selected text, after that this output can be use on $this-view()->headKeywords and $this-view()->headDescription

input : This is my <b>TEst</b> title for Description this page
keyword output : this,test,title,description,page
description output : this is my test title for description this page