feat(appliedFontsStore): create Applied Fonts Manager to manage fonts download

src/app/ui/Layout.svelte

@@ -24,6 +24,8 @@ let { children } = $props();
 
 <svelte:head>
     <link rel="icon" href={favicon} />
+    <link rel="preconnect" href="https://api.fontshare.com" />
+    <link rel="preconnect" href="https://cdn.fontshare.com" crossorigin="anonymous" />
 </svelte:head>
 
 <div id="app-root">