Adds Prettier formatting and PHP support

Adds Prettier for consistent code formatting across the project.
Includes PHP plugin and configures formatting for PHP files.
Adds format and format:check scripts to package.json for ease of use.

site/snippets/home-news.php

@@ -1,6 +1,6 @@
 <div class="py-16">
     <h2>Neuigkeiten aus dem Verein</h2>
-    <?php foreach($news as $post): ?>
+    <?php foreach ($news as $post): ?>
     <article class="relative flex flex-col gap-8 lg:flex-row py-12">
         <div class="relative aspect-video sm:aspect-2/1 lg:aspect-square lg:w-64 lg:shrink-0">
             <img src="<?= $post->image()->url() ?>" alt="" class="absolute inset-0 size-full rounded-xl object-cover" />
@@ -9,11 +9,13 @@
         <div>
             <div class="flex items-center gap-x-4 text-m justify-between">
                 <div>
-                    <time class="text-gray-500"><?= $post->date()->toDate("d.m.Y") ?></time>
+                    <time class="text-gray-500"><?= $post->date()->toDate('d.m.Y') ?></time>
                 </div>
                 <div>
-                    <?php foreach($post->tags()->split() as $tag): ?>
-                        <a href="<?= page('news')->url(['params' => ['tag' => $tag]]) ?>" class="relative z-10 rounded-full bg-gray-50 px-3 py-1.5 font-medium text-gray-600 hover:bg-gray-100"><?= $tag ?></a>
+                    <?php foreach ($post->tags()->split() as $tag): ?>
+                        <a href="<?= page('news')->url([
+                          'params' => ['tag' => $tag],
+                        ]) ?>" class="relative z-10 rounded-full bg-gray-50 px-3 py-1.5 font-medium text-gray-600 hover:bg-gray-100"><?= $tag ?></a>
                     <?php endforeach; ?>
                 </div>
             </div>
@@ -41,17 +43,8 @@
                     </div>
                 </div>
             </div>
-            <?php endif ?>
+            <?php endif; ?>
         </div>
     </article>
-    <?php endforeach ?>
-    
-    <?php if(param('tag')): ?>
-    <div class="my-8">
-        <a href="<?= $page->url() ?>" class="bg-gray-100 hover:bg-gray-200 text-gray-800 font-semibold py-2 px-4 rounded">
-            Alle Beiträge anzeigen
-        </a>
-    </div>
-    <?php endif ?>
-
+    <?php endforeach; ?>
 </div>