outfit-images: add api endpoint

Just returns the placeholder image right now!

api/outfitImage.js

@@ -0,0 +1,19 @@
+const beeline = require("honeycomb-beeline")({
+  writeKey: process.env["HONEYCOMB_WRITE_KEY"],
+  dataset:
+    process.env["NODE_ENV"] === "production"
+      ? "Dress to Impress (2020)"
+      : "Dress to Impress (2020, dev)",
+  serviceName: "impress-2020-gql-server",
+});
+
+const { renderOutfitImage } = require("../src/server/outfit-images");
+
+async function handle(req, res) {
+  const image = await renderOutfitImage();
+  return res.status(200).setHeader("Content-Type", "image/png").send(image);
+}
+
+export default async (req, res) => {
+  beeline.withTrace({ name: "outfitImage" }, () => handle(req, res));
+};