Styled book form and added an ux dropzone component.

config/bundles.php

@@ -13,4 +13,5 @@ return [
     Symfony\Bundle\MakerBundle\MakerBundle::class => ['dev' => true],
     Sensio\Bundle\FrameworkExtraBundle\SensioFrameworkExtraBundle::class => ['all' => true],
     Symfony\WebpackEncoreBundle\WebpackEncoreBundle::class => ['all' => true],
+    Symfony\UX\Dropzone\DropzoneBundle::class => ['all' => true],
 ];