Create operation support matrix for CK Tile Engine
Introduce operation support matrix for CK Tile kernels detailing data
types, layouts, and GPU targets.
## Motivation
The tile engine currently supports a subset of CK Tile operations, but
there is no in-repo reference that maps which operations, data types,
layouts, and GPU targets are covered by the tile engine versus only
available through hand-written examples or tests. This makes it
difficult for developers to know what the tile engine already handles,
what requires manual integration, and where coverage gaps exist. This PR
introduces an operation support matrix as a markdown file in
tile_engine/, intended to be maintained as a living document alongside
the code. Because it lives in the repository rather than an external
wiki or PDF, it can be reviewed and updated in the same pull requests
that add or extend tile engine operations, keeping it accurate as
coverage evolves.
## Technical Details
Documentation only change.
## Test Plan
N/A
## Test Result
N/A
## Submission Checklist
- [x] Look over the contributing guidelines at
https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.
