add umami analytics

Author: gchartier

src/routes/+layout.svelte

@@ -4,4 +4,14 @@
     let { children } = $props();
 </script>
 
+<!-- Setup Privacy-preserving Umami Analytics -->
+<svelte:head>
+    <script
+        async
+        defer
+        data-website-id="2d656c7d-b41a-4e19-934c-d7c9d91d784d"
+        src="https://analytics.server.orcfax.io/umami.js"
+    ></script>
+</svelte:head>
+
 {@render children()}