Add Cloudflare API controls

cloudflare/src/responses.ts

@@ -0,0 +1,14 @@
+export function jsonResponse(
+  body: unknown,
+  status: number,
+  headers: Record<string, string> = {},
+): Response {
+  return new Response(JSON.stringify(body), {
+    status,
+    headers: {
+      "Content-Type": "application/json; charset=utf-8",
+      "X-Content-Type-Options": "nosniff",
+      ...headers,
+    },
+  });
+}