[FEATURE] add like feature

Classes/Controller/Ajax/LikeController.php

Classes/Domain/Model/News.php

Configuration/TCA/Overrides/pages.php

Configuration/TypoScript/Common/setup.txt

Configuration/TypoScript/Frontend/setup.txt

Resources/Private/Language/de.locallang.xlf

Resources/Private/Language/locallang.xlf

Resources/Private/Partials/Teaser.html

Resources/Private/Templates/SingleView/SingleView.html

Resources/Public/Sass/styles.scss

Resources/Public/Scripts/Likes.js

ext_localconf.php

ext_tables.php

ext_tables.sql