[CK_TILE] Grouped GEMM tile loop (#2146)

* Add trait to use a persistent kernel and split the entrypoints in grouped gemm

* Some helper functions for persistent kernel case

* Get max occupancy grid using device properties

* Implement tile loop in main entry point to grouped gemm

* Enable GridSize() on device

* Handle offset tile index using real current block index

* Add persistent kernel choice to grouped gemm example

* Use a for-loop for iterating over the group

* Reduce VGPR spills by early-exit

* Enable persistent kernel choice in grouped_gemm example

* Add persistent kernel option to grouped_gemm test

* Fix formatting with remod.py

* Remove GridUpdateBlocks as blocks are now iteratively computed

* Add comment about VGPR spilling

* Fix formatting

* Use CK_TILE_HOST instead of __host__

* Enable all Row/Col combinations in grouped gemm unit test

* Add some KBatch=2 cases to grouped gemm tests

* Fix SplitK for grouped gemm

* Enable pipeline hotloop/tailnumber selection in-kernel for grouped gemm

* Add type traits

* Split examples to regular and tileloop

* Formatting

* Use hipExtStreamGetCUMask to get current active CUs for the given stream

* Align test and example kernel config, and disable validation for splitk repeats

* Remove debug options from CMakeLists.txt

* Separate the code paths for persistent/non-persistent in test

* Fix formatting

* Address review comments

---------

Co-authored-by: Adam Osewski <19374865+aosewski@users.noreply.github.com>

[ROCm/composable_kernel commit: d1e6f0982d]

include/ck_tile/core/utility/type_traits.hpp

@@ -127,4 +127,15 @@ struct is_any_of<CompareTo, FirstType, Rest...>
 {
 };
 
+// Helper to check if a type is a specialization of a given template
+template <typename Test, template <typename...> class RefTemplate>
+struct is_specialization_of : std::false_type
+{
+};
+
+template <template <typename...> class RefTemplate, typename... Args>
+struct is_specialization_of<RefTemplate<Args...>, RefTemplate> : std::true_type
+{
+};
+
 } // namespace ck_tile