feat(device): add device sync button

src/lib/ToolBar.svelte

@@ -9,6 +9,7 @@
     play: '/icons/speaker.png',
     search: '/icons/internet.png',
     computer: '/icons/computer.png',
+    device: '/icons/ipod.svg',
   };
 
   let history: string[] = $state([]);
@@ -80,7 +81,12 @@
     <img src={icons.search} alt="Search" />
     <span>Search</span>
   </a>
-  
+
+  <a href="/sync" class="toolbar-button" title="Device Sync">
+    <img src={icons.device} alt="Device Sync" />
+    <span>Sync</span>
+  </a>
+
   <a href="/settings" class="toolbar-button" title="Settings">
     <img src={icons.computer} alt="Settings" />
     <span>Settings</span>