Dlejeune/ck tile 2d multiple reductions (#3147)

* WIP

* Add Unit tests for the Multi Reduction Kernel

* clang format

* Rename multiblock to threadwise

* Multiblock WIP

* Fix multi reduce multi block unit tests

* Multi Reduce Tile Engine: WIP

* refactoring + try addressing precision error

* Fix multiops examples

* Cleanup

* Clean up tile engine's reduce op

* Update changelog

* Fix remod/clang

* Fix dates

* Fix documentation & missing file

* Fix comments

* Use the update_tile api in the multi-block kernel

* Unify threadwise/multiblock into a single kernel + default multiblock output to float in tests

* Add TileParitioner

* Cleanup

* Add warning when no data to process, in the example

* Refactoring Reduce kernel Tile Partioner + cleanup

* Move the tile partioner to its own file

* Add missing includes

* Fix copyright header with update_amd_copyright_headers.py

* Fix change of interface in Reduce2dProblem

---------

Co-authored-by: Damien Lejeune <damien.lejeune@amd.com>
Co-authored-by: Adam Osewski <19374865+aosewski@users.noreply.github.com>

include/ck_tile/ops/elementwise/unary_element_wise_operation.hpp

@@ -465,6 +465,12 @@ struct PassThrough
         /*  otherwise (r-value or const)     → do nothing  */
     }
 
+    template <typename Y, typename X>
+    CK_TILE_HOST_DEVICE void operator()(Y& y, const X& x) const
+    {
+        y = ck_tile::type_convert<raw_t<Y>>(x);
+    }
+
     template <typename E, typename C, typename... Ds>
     CK_TILE_HOST_DEVICE auto operator()(E& e, const C& c, const Ds&...) const -> void
     {