add: example for tanstack start

examples/tanstack-start/src/bknd.ts

@@ -0,0 +1,20 @@
+import config from "../bknd.config";
+import { getApp } from "bknd/adapter/tanstack-start";
+
+export async function getApi({
+  headers,
+  verify,
+}: {
+  verify?: boolean;
+  headers?: Headers;
+}) {
+  const app = await getApp(config, process.env);
+
+  if (verify) {
+    const api = app.getApi({ headers });
+    await api.verifyAuth();
+    return api;
+  }
+
+  return app.getApi();
+}