Composable Kernel Integration

[mirza-halilcevic]

Integrate the new Composable Kernel API into MIGraphX.

[music-dino]

New Problem and Solution API has been implemented for gemm_softmax_gemm, using the same instance parameters as previously used on the migraphx branch of CK.

[music-dino]

The new CK side API has been integrated into MGX. Beside changes in MGX, this required modifications of the top-level and codegen CMAKE files to expose ck_host as a component of composable_kernel.

[music-dino]

Usage of type_traits in the CK codebase precluded HIPRTC from compiling CK code.
To circumvent the issue, certain sections of CK code had to be excluded by using #ifndef __HIPCC_RTC__.
Where exclusion was not possible, alternatives to type_traits constructs had to be implemented.