[FEATURE] Reenable the image feature

Classes/Controller/SelectImageController.php

Classes/Form/Element/RichTextElement.php

Classes/ImageHandler/AddImageHandler.php

Classes/ImageHandler/EditImageHandler.php

Configuration/Backend/AjaxRoutes.php

Configuration/Backend/Routes.php

Configuration/TinyMce/standard.js

Configuration/TypoScript/pageTSConfig.ts

Resources/Public/JavaScript/AddImage.js

Resources/Public/JavaScript/EditImage.js

Resources/Public/JavaScript/SelectImage.js

...urces/Public/Plugins/Typo3FileManager/typo3filemanager.js

...s/Public/Plugins/Typo3FileManager/typo3filemanager.min.js