GitLab

* Add a gpu gemm reference kernel

* Switch to gpu reference in gemm examples

* Remove redundant arguments

* Update all related examples

* Update more examples

* Try less threads per block

* Try even less threads per block

* Add support for all matrix layouts

* Increase block size

* Clean up

* Remove hardcoded strides

* Clean up

* Try a column-major case

* Revert back to row-major

* Run both CPU and GPU veriffication

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Co-authored-by: Po Yen Chen <PoYen.Chen@amd.com>