feat: add full screen audio player and radio station management

- Implemented FullScreenPlayer component for enhanced audio playback experience.
- Added functionality to toggle full screen mode in AudioPlayer.
- Introduced NavidromeConfigContext for managing Navidrome server configurations.
- Created RadioStationsPage for managing internet radio stations, including adding, deleting, and playing stations.
- Enhanced SettingsPage to configure Navidrome server connection with validation and feedback.
- Updated NavidromeAPI to support fetching and managing radio stations.
- Integrated lyrics fetching and display in FullScreenPlayer using LrcLibClient.

app/components/sidebar.tsx

@@ -18,6 +18,7 @@ export function Sidebar({ className, playlists }: SidebarProps) {
   const isAlbums = usePathname() === "/library/albums";
   const isArtists = usePathname() === "/library/artists";
   const isQueue = usePathname() === "/queue";
+  const isRadio = usePathname() === "/radio";
   const isHistory = usePathname() === "/history";
   const isSongs = usePathname() === "/library/songs";  const isPlaylists = usePathname() === "/library/playlists";
 
@@ -84,6 +85,27 @@ export function Sidebar({ className, playlists }: SidebarProps) {
                 Queue
               </Button>
             </Link>
+            <Link href="/radio">
+              <Button variant={isRadio ? "secondary" : "ghost"} className="w-full justify-start mb-2">
+                <svg
+                  xmlns="http://www.w3.org/2000/svg"
+                  viewBox="0 0 24 24"
+                  fill="none"
+                  stroke="currentColor"
+                  strokeWidth="2"
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                  className="mr-2 h-4 w-4"
+                >
+                  <path d="M4.9 19.1C1 15.2 1 8.8 4.9 4.9"/>
+                  <path d="M7.8 16.2c-2.3-2.3-2.3-6.1 0-8.5"/>
+                  <circle cx="12" cy="12" r="2"/>
+                  <path d="M16.2 7.8c2.3 2.3 2.3 6.1 0 8.5"/>
+                  <path d="M19.1 4.9C23 8.8 23 15.2 19.1 19.1"/>
+                </svg>
+                Radio
+              </Button>
+            </Link>
           </div>
         </div>
           <div>