[tools] Workflow for tools module build

[seanshpark]

To prepare new tools inside tools/* folder, at least, lets' prepare some CI build.

Background:

• new tool onnx-subgraph from contributor is planned to reside in tools folder.
• but we don't have any Workflow to check them

My first step is to do minimum build and do unit test.
Extending the CI can be done for each modules while working on it.

[seanshpark]

For Workflow development, I'll first work on my fork and check it will work as expected.

• https://github.com/seanshpark/ONE/actions/runs/12879765251 is now working as expected

I'll post necessary changes with new PR is posted.