Ck tile engine gemm unit tests exapand test coverage (#3025)

* initial commit for testing datatypes, layouts and traits

* correct warp tile size for small datatype config to make a validate instance for fp16, bf16, fp8

* add tile size coverage test

* Cover more tests, parallel instance generation, documentation

* update cmakelist to run more tests

* initial codes to support add test params in json file

* add congurable  problem sizes for different tests

* modify README.md

* clean test_gemm_simple code

* correct padding coverage test

* Add comprehensive and quick tile size config files

* remove fp64 from datatypes

* update documents. manage selecting tile_size config (quick or Comprehensive)

* correct padding test problem sizes

* update comprehensive test and correct documents

* Skip GEMM tests with unsupported arguments instead of failing

* change gen_single instead of gen_indivisual because of an issue. add splitk tests to tile_size_quick_config

* clean CMakeList, remod py file

* Refactor test configs: Rename tile_size to coverage, remove separate traits config,  clean cmakefile, readme

* update fp32, fp8 to test all layouts, clean documents and comments

* limit fp32 test layouts to rcr because of compilation error on some gpus

* remove fp32 because of the removing from gemm_instance_builder, make quick test smaller, updating comments

* Fix fp8/bf8 test failures on gfx950 by adding OCP FP8 format support

* Reduce quick_coverage test count from ~250 to ~144 for faster CI

experimental/builder/include/ck_tile/builder/CMakeLists.txt

@@ -1 +1 @@
-# Empty placeholder until we add library code.
+#Empty placeholder until we add library code.