## Motivation
The existing unification work supports DENSE and SPARSE intrinsics. In
this PR, we enable support for SCALE intrinsics and add example SCALE
implementations.
## Technical Details
Adding MFMA SCALE intrinsics support, adding tests for MFMA SCALE
intrinsics, and adding WMMA SCALE policy trait.
Note: fp6 SCALE intrinsics support is not included in this PR, as its
handling in ck_tile is currently more specialized and does not follow
the same pattern as other datatypes.
## Test Plan
Added new tests for the relevant SCALE specialisations.
## Test Result
Test should pass.
## Submission Checklist
- [x] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.
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