added plugin two factor 2fa

wp-content/plugins/two-factor/assets/banner-1544x500.png

wp-content/plugins/two-factor/assets/banner-772x250.png

wp-content/plugins/two-factor/assets/icon-128x128.png

wp-content/plugins/two-factor/assets/icon-256x256.png

wp-content/plugins/two-factor/assets/icon.svg

wp-content/plugins/two-factor/assets/screenshot-1.png

wp-content/plugins/two-factor/assets/screenshot-2.png

wp-content/plugins/two-factor/class.two-factor-core.php

wp-content/plugins/two-factor/includes/Google/u2f-api.js

wp-content/plugins/two-factor/includes/Yubico/U2F.php

...ent/plugins/two-factor/includes/function.login-header.php

...ns/two-factor/providers/class.two-factor-backup-codes.php

...t/plugins/two-factor/providers/class.two-factor-dummy.php

...t/plugins/two-factor/providers/class.two-factor-email.php

.../providers/class.two-factor-fido-u2f-admin-list-table.php

.../two-factor/providers/class.two-factor-fido-u2f-admin.php

...lugins/two-factor/providers/class.two-factor-fido-u2f.php

...lugins/two-factor/providers/class.two-factor-provider.php

...nt/plugins/two-factor/providers/class.two-factor-totp.php

...ntent/plugins/two-factor/providers/css/fido-u2f-admin.css