Add pretix widget as ticket shop

Author: Marcel Führer

_includes/head.html

@@ -55,6 +55,8 @@
   <script src="https://kit.fontawesome.com/818bfc19aa.js" crossorigin="anonymous"></script>
   <script src="https://cdn.jsdelivr.net/npm/@popperjs/[email protected]/dist/umd/popper.min.js" integrity="sha384-oBqDVmMz9ATKxIep9tiCxS/Z9fNfEXiDAYTujMAeBAsjFuCZSmKbSSUnQlmh/jp3" crossorigin="anonymous"></script>
   <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js" integrity="sha384-cuYeSxntonz0PPNlHhBs68uyIAVpIIOZZ5JqeqvYYIcEL727kskC66kF92t6Xl2V" crossorigin="anonymous"></script>
+  <script type="text/javascript" src="https://pretix.eu/widget/v1.en.js" async crossorigin></script>
+  <link rel="stylesheet" type="text/css" href="https://pretix.eu/phpdd/2024/widget/v1.css" crossorigin>
   <link rel="stylesheet" type="text/css" media="screen" href="{{ '/assets/css/fonts.css'  | prepend: site.data.settings.baseurl  }}">
   <link rel="stylesheet" type="text/css" media="screen" href="{{ '/assets/bootstrap/bootstrap.css'  | prepend: site.data.settings.baseurl  }}">
   <link rel="stylesheet" type="text/css" media="screen" href="{{ '/assets/css/main.css' | prepend: site.data.settings.baseurl  }}">

index.html

@@ -179,9 +179,14 @@ <h3>{{ site.data.venue.name }}</h3>
 
 <h1 id="tickets">Tickets</h1>
 
-<h3>
-	Ticket sale starts soon. Stay tuned! 🎟️
-</h3>
+<pretix-widget event="https://pretix.eu/phpdd/2024/" single-item-select="button"></pretix-widget>
+<noscript>
+	<div class="pretix-widget">
+		<div class="pretix-widget-info-message">
+			JavaScript is disabled in your browser. To access our ticket shop without JavaScript, please <a target="_blank" rel="noopener" href="https://pretix.eu/phpdd/2024/">click here</a>.
+		</div>
+	</div>
+</noscript>
 
 <hr class="m-5">