add banner on the top

Author: furqaankhan

Analyzing_Data/PMTiles-railroad.ipynb

@@ -5,6 +5,8 @@
    "id": "7de6fe5f-ec16-47f8-94d1-16aa6ca43ac4",
    "metadata": {},
    "source": [
+    "![PMTiles rendered in Esri](./assets/img/pmtiles-rr-banner.png)\n",
+    "\n",
     "![Wherobots Logo](https://raw.githubusercontent.com/wherobots/wherobots-examples/refs/heads/main/assets/img/header-logo.png)\n",
     "\n",
     "# Generate PMTiles using Wherobots\n",