Add cibuildwheel github action

.github/workflows/build-wheels.yml

@@ -0,0 +1,30 @@
+name: Build runno_sandbox wheels
+
+on: [push, pull_request]
+
+jobs:
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        # macos-13 is an intel runner, macos-14 is apple silicon
+        os: [ubuntu-latest, windows-latest, macos-13, macos-14]
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Build wheels
+        uses: pypa/cibuildwheel@v2.22.0
+        # env:
+        #   CIBW_SOME_OPTION: value
+        #    ...
+        with:
+          package-dir: sandbox
+          output-dir: wheelhouse
+          config-file: "{package}/pyproject.toml"
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: cibw-wheels-${{ matrix.os }}-${{ strategy.job-index }}
+          path: ./wheelhouse/*.whl