feat: simplify caching — TanStack Query as single source of truth (#6075)

packages/request-handler/src/lib/widget-request-handler.ts

@@ -0,0 +1,14 @@
+import { createRequestHandler } from "./request-handler";
+
+interface Options<TData, TInput extends Record<string, unknown>> {
+  requestAsync: (input: TInput) => Promise<TData>;
+}
+
+export const createWidgetRequestHandler = <TData, TInput extends Record<string, unknown>>(
+  options: Options<TData, TInput>,
+) => ({
+  handler: (widgetOptions: TInput) =>
+    createRequestHandler<TData, TInput>({
+      requestAsync: options.requestAsync,
+    }).handler(widgetOptions),
+});