Add sub groups to group table

src/components/map/MapTileImage.js

@@ -0,0 +1,18 @@
+import React from "react";
+import { Image } from "theme-ui";
+
+import { useDataURL } from "../../contexts/AssetsContext";
+import { mapSources as defaultMapSources } from "../../maps";
+
+function MapTileImage({ map, sx }) {
+  const mapURL = useDataURL(
+    map,
+    defaultMapSources,
+    undefined,
+    map.type === "file"
+  );
+
+  return <Image sx={sx} src={mapURL}></Image>;
+}
+
+export default MapTileImage;