[SYCL][COMPAT] Add launch lambda overload

sycl/include/syclcompat/launch.hpp

@@ -118,6 +118,22 @@ launch(const dim3 &grid, const dim3 &threads, Args... args) {
   return launch<F>(grid, threads, get_default_queue(), args...);
 }
 
+// Overload taking zero-argument function object
+template <class F, int Dim>
+std::enable_if_t<std::is_invocable_v<const F &>, sycl::event>
+launch(const F &f, const sycl::nd_range<Dim> &range,
+       sycl::queue q = get_default_queue()) {
+  return q.parallel_for(detail::transform_nd_range<Dim>(range),
+                        [=](sycl::nd_item<Dim>) { f(); });
+}
+// Alternative launch through dim3 objects
+template <class F>
+std::enable_if_t<std::is_invocable_v<const F &>, sycl::event>
+launch(const F &f, const dim3 &grid, const dim3 &threads,
+       sycl::queue q = get_default_queue()) {
+  return launch(f, sycl::nd_range<3>{grid * threads, threads}, q);
+}
+
 } // namespace syclcompat
 
 namespace syclcompat::experimental {