Enable SVG support in Media Manager

The Winter CMS team will be making SVG supported by default very soon, but in the mean time, if you wish to allow SVG uploads into the Media Manager, simply add the following to your config/cms.php configuration file:

    'fileDefinitions' => [
        'defaultExtensions' => [
            'jpg',
            'jpeg',
            'bmp',
            'png',
            'webp',
            'gif',
            'svg',
            'js',
            'map',
            'ico',
            'css',
            'less',
            'scss',
            'ics',
            'odt',
            'doc',
            'docx',
            'ppt',
            'pptx',
            'pdf',
            'swf',
            'txt',
            'ods',
            'xls',
            'xlsx',
            'eot',
            'woff',
            'woff2',
            'ttf',
            'flv',
            'wmv',
            'mp3',
            'ogg',
            'wav',
            'avi',
            'mov',
            'mp4',
            'mpeg',
            'webm',
            'mkv',
            'rar',
            'zip'
        ],
        'imageExtensions' => [
            'jpg',
            'jpeg',
            'bmp',
            'png',
            'webp',
            'gif',
            'svg',
        ],
    ],