feat(web): add favicon icon

apps/web/app/icon.tsx

@@ -0,0 +1,39 @@
+import { ImageResponse } from "next/og";
+
+export const size = {
+  width: 32,
+  height: 32,
+};
+export const contentType = "image/png";
+
+export default function Icon() {
+  return new ImageResponse(
+    <div
+      style={{
+        width: "100%",
+        height: "100%",
+        display: "flex",
+        alignItems: "center",
+        justifyContent: "center",
+        background: "#ebebeb",
+        borderRadius: "50%",
+      }}
+    >
+      <svg
+        width="18"
+        height="18"
+        viewBox="0 0 18 18"
+        xmlns="http://www.w3.org/2000/svg"
+        aria-label="Music note"
+      >
+        <path
+          d="M13.014,1.162l-3.5,.477h0c-.862,.118-1.513,.864-1.513,1.734v7.262c-.568-.398-1.256-.635-2-.635-1.93,0-3.5,1.57-3.5,3.5s1.57,3.5,3.5,3.5,3.5-1.57,3.5-3.5V6.405l3.987-.543c.862-.118,1.513-.864,1.513-1.734v-1.231c0-.505-.218-.986-.599-1.318-.381-.333-.894-.484-1.387-.416Z"
+          fill="#8f8f8f"
+        />
+      </svg>
+    </div>,
+    {
+      ...size,
+    },
+  );
+}