Let test pipeline fail if gyp-build or similar is used

[heavyrubberslave]

If gyp-build or similar is used during npm install the built package for a release would not be platform agnostic anymore (at least not agnostic for the platforms I want the prebuilt version to work).

So if this happens, I want the pipeline to fail. It can be done by analyzing the npm install log and check for log messages hinting building bindings like gyp-build.

Could look something like this:

      - name: npm ci (capture log)
        shell: bash
        run: |
          set -euo pipefail
          # Don't use --ignore-scripts; we WANT to see if any builds happen.
          npm ci --loglevel=verbose 2>&1 | tee npm-install.log

      # Fail if we see evidence of native compilation.
      - name: Fail if native build detected in npm log
        shell: bash
        run: |
          set -euo pipefail

          # A pragmatic set of patterns that almost always appear when native builds run.
          # Add/remove patterns depending on your ecosystem.
          PATTERN='(node-gyp|gyp info|node-pre-gyp|prebuild-install(?!.*skipping download)|CXX|CXXFLAGS|CC=|clang\+\+|clang|gcc|g\+\+|make(\[|:)|ninja|cmake|msbuild|cl\.exe|LINK : fatal error|binding\.gyp|nan\.h|fatal error:.*\.h)'

          if grep -Ein "$PATTERN" npm-install.log; then
            echo ""
            echo "::error:: Detected signs of native compilation during npm install."
            echo "If you expected a fully prebuilt/agnostic install for this platform, a dependency likely built from source."
            exit 1
          else
            echo "✅ No native-build patterns found in npm-install.log"
          fi