Add Chandler layer

Also enable es2022 to allow top-level await (supported by 2021-era+
browsers)

layers/chandler/layer.js

@@ -0,0 +1,32 @@
+import VectorLayer from 'ol/layer/Vector';
+import {Vector as VectorSource} from 'ol/source.js';
+
+import {Style} from 'ol/style.js';
+import Icon from 'ol/style/Icon.js';
+
+import pinURL from '/layers/chandler/pin.svg?url'; // TODO: remove `?url`?
+import { Feature } from 'ol';
+import { Point } from 'ol/geom';
+import { fromLonLat } from 'ol/proj';
+
+const res = await fetch("https://whereis.chandlerswift.com/api/0/last");
+const locs = await res.json();
+const loc = locs[0];
+
+const vectorLayer = new VectorLayer({
+    source: new VectorSource({
+        features: [
+            new Feature({
+                geometry: new Point(fromLonLat([loc.lon, loc.lat])),
+            })
+        ]
+    }),
+    style: new Style({
+        image: new Icon({
+            anchor: [0.5, 1],
+            src: pinURL,
+        }),
+    }),
+});
+
+export default vectorLayer;