* Fix a typo
* Use std::variant to call run_gemm_example_with_layouts with the available layout variant combinations
* Use a unified run_gemm_example_prec_type for basic gemm and universal gemm
* Factor out run_gemm_example_prec_type
* Refactor argument parsing in gemm_splitk_two_stage_reduce.cpp
* Parse arguments outside of create_args
* Move the gemm operators to separate structs to facilitate their reuse
* Move the invokers to separate files to facilitate their reuse
* Rename the invoker files for consistency with the examples that use them
* Add fp32 support to the elementwise examples, and produce an error message for unsupported types
* Get rid of four unused variables
* Make two variables const
* Add support for different input-output type combinations in elementwise examples
* Test support for different input and output types in elementwise examples
* Add support for different operations in the elementwise unary tests
* Add support for UnaryConvert in the elementwise unary tests
* Add support for bf16 in elementwise examples, excluding unsupported type combinations
* Make some operator parameters const in ElementWiseKernel
* Remove some unnecessary include statements
* Implement a two-stage GEMM that does a type conversion in the second stage using the elementwise kernel
* Clear workspace instead of output when flushing the cache in SplitKTwoStageInvoker::gemm
* Fix formatting issues reported by clang
* Add back CK_TILE_USE_WMMA related changes
* Use the right prec type for bf16 in the universal GEMM and two stage split K examples
* Add some brackets
* Add some brackets
* Separate the clearing of the GEMM output memory from the cache flushing in the universal GEMM example
* Separate the clearing of the GEMM output memory from the cache flushing in the split K two stage example
* Fix formatting
* No need to call SetZero on ws_m_n_dev_buf here, as clear_gemm_output now does this as part of the kernel preprocessing
* Add fp16 data type to splitk two stage example
* Add preprocessing with optional cache flushing and clearing of output for k_batch > 1 to the basic GEMM example
