Add cmake functions to allow projects querying about architecture support

[evedovelli]

Motivation

Depending projects can use these functions to check if an architecture is supported or not, and take different paths accordingly.

Technical Details

New cmake function created, exported, and included to make it visible for projects including hipTensor with find_package(hiptensor) in their CMakes.

Test Plan

1. Build and install hipTensor to verify the newly added files are properly installed.
2. Change rocm-examples to use one of the newly provided functions and make sure it compiles properly.

Test Result

Files were installed correctly and both hipTensor and rocm-examples are building correctly.

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[Ryker0627]

lgtm