adds height to route drawing

web/src/routes/api/v1/valhalla/route/+server.ts

@@ -0,0 +1,20 @@
+import { env } from '$env/dynamic/public';
+import { error, json, type NumericRange, type RequestEvent } from "@sveltejs/kit";
+
+
+export async function POST(event: RequestEvent) {
+    const data = await event.request.json()
+    if (!env.PUBLIC_VALHALLA_URL) {
+        return error(400, "PUBLIC_VALHALLA_URL not set")
+    }
+    try {
+        const r = await event.fetch(env.PUBLIC_VALHALLA_URL + '/route', { method: "POST", body: JSON.stringify(data) });        
+        const response = await r.json();
+        if (!r.ok) {
+            throw error(r.status as NumericRange<400,500>, response);
+        }
+        return json(response);
+    } catch (e: any) {
+        throw error(e.status || 500, e)
+    }
+}