feat: add admin crud for resources and rooms

src/Entity/Resource.php

@@ -7,6 +7,7 @@ namespace App\Entity;
 use App\Enum\ResourceType;
 use App\Repository\ResourceRepository;
 use Doctrine\ORM\Mapping as ORM;
+use Symfony\Bridge\Doctrine\Validator\Constraints\UniqueEntity;
 use Symfony\Component\Validator\Constraints as Assert;
 
 /**
@@ -14,6 +15,7 @@ use Symfony\Component\Validator\Constraints as Assert;
  */
 #[ORM\Entity(repositoryClass: ResourceRepository::class)]
 #[ORM\UniqueConstraint(name: 'uniq_resource_label', columns: ['type', 'label'])]
+#[UniqueEntity(fields: ['type', 'label'], message: 'Diese Bezeichnung ist bereits vergeben.', errorPath: 'label')]
 class Resource
 {
     #[ORM\Id]
@@ -26,6 +28,7 @@ class Resource
 
     #[ORM\Column(length: 50)]
     #[Assert\NotBlank]
+    #[Assert\Length(max: 50)]
     private string $label;
 
     /**