feat: add admin crud for resources and rooms

src/Enum/ResourceType.php

@@ -8,8 +8,8 @@ namespace App\Enum;
  * The kinds of thing that can be booked.
  *
  * **This enum is the extension point.** The dashboard builds one tile per case, the board route
- * accepts one backing value per case, and the floor plan renders every kind the same way.
- * Adding a third bookable kind is therefore: a case here and rows in `app:seed`.
+ * accepts one backing value per case, and the floor plan and the admin screen render every kind
+ * the same way. Adding a third bookable kind is therefore: a case here.
  * Nothing else needs editing — in particular no template lists the kinds by hand.
  *
  * The backing value is both what is persisted in `resource.type` and what appears in a URL, so
@@ -45,6 +45,17 @@ enum ResourceType: string
         };
     }
 
+    /**
+     * What a ResourceGroup of this kind is called: an office has rooms, a car park has areas.
+     */
+    public function groupLabel(): string
+    {
+        return match ($this) {
+            self::DESK => 'Raum',
+            self::PARKING => 'Bereich',
+        };
+    }
+
     public function icon(): string
     {
         return match ($this) {