Allow uploading images (#13)

Adds an optional field for the post image.

Fixes #12

Co-authored-by: clfreville2 <clement.freville2@etu.uca.fr>
Reviewed-on: https://codefirst.iut.uca.fr/git/clement.freville2/herbarium/pulls/13
Reviewed-by: Bastien OLLIER <bastien.ollier@noreply.codefirst.iut.uca.fr>

src/Form/PostType.php

@@ -6,6 +6,7 @@ use App\Entity\Post;
 use App\Entity\Species;
 use Symfony\Bridge\Doctrine\Form\Type\EntityType;
 use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\FileType;
 use Symfony\Component\Form\FormBuilderInterface;
 use Symfony\Component\OptionsResolver\OptionsResolver;
 
@@ -20,6 +21,7 @@ class PostType extends AbstractType
             ->add('latitude')
             ->add('longitude')
             ->add('altitude')
+            ->add('imageFile', FileType::class)
             ->add('commentary')
             ->add('species', EntityType::class, [
                 'class' => Species::class,