feat: add favicon support

- Added icon metadata to layout.tsx for proper favicon handling
- Copied favicon.ico to public folder for accessibility

app/layout.tsx

@@ -12,6 +12,11 @@ const inter = Inter({ subsets: ["latin"] });
 export const metadata: Metadata = {
   title: "Pulse - PSA Management System",
   description: "Modern dashboard for Autotask PSA integration with RMM and NMS mapping",
+  icons: {
+    icon: "/favicon.ico",
+    shortcut: "/favicon.ico",
+    apple: "/favicon.ico",
+  },
 };
 
 export default function RootLayout({