ci(build): major rework GitHub Actions Workflow

[duhow]

This is a rework of the build.yaml GitHub Actions.
While there are some special stuff that is scripted, this is a good first step in towards simplifying the workflow.
Instead of copy-pasting the build commands, you can add new models by defining into the matrix.

Changes

• Use matrix.board to list all boards available, and matrix.build for release and/or debug process.
• Use same job, parallelizes machines and drops down the build time from 9 minutes to less than 2 minutes.
• Get flash.sh command from docs how-to-flash.txt, easy to mantain in a single place.

▶️ See https://github.com/duhow/nuki_hub/actions/runs/9386652818 as run example.

Note

Suggest to do an squash merge, I don't think you'll need the testing commits.

[iranl]

Looks great!

Have you tested the new version release part? It should automatically create a release and attach artifacts when creating a tag (I don't see a release on your fork atm)

[duhow]

Yes, went as draft. See https://github.com/duhow/nuki_hub/releases/tag/8.37

[iranl]

Great. LGTM