feat(apps/web): Add manifest file to app folder

apps/web/src/app/manifest.ts

@@ -0,0 +1,32 @@
+import type { MetadataRoute } from "next";
+
+export default function manifest(): MetadataRoute.Manifest {
+    return {
+        name: "CartesiScan",
+        short_name: "CS",
+        description:
+            "Scan DApp inputs and interact with DApp's backend at ease.",
+        start_url: "/",
+        display: "standalone",
+        theme_color: "#000000",
+        background_color: "#00f7ff",
+        icons: [
+            {
+                src: "cartesi-logo-192x192.png",
+                sizes: "192x192",
+                type: "image/png",
+            },
+            {
+                src: "cartesi-logo-512x512.png",
+                sizes: "512x512",
+                type: "image/png",
+            },
+            {
+                src: "maskable-icon-196x196.png",
+                sizes: "196x196",
+                type: "image/png",
+                purpose: "maskable",
+            },
+        ],
+    };
+}