Add CI files to build python packages

.github/workflows/pip.yml

@@ -0,0 +1,39 @@
+# From https://github.com/wjakob/nanobind_example/blob/5ce5ce57143a469e92d9ebaee9c47949ee77caa8/.github/workflows/pip.yml
+name: Pip
+
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    name: Build with Pip
+    runs-on: ${{ matrix.platform }}
+    strategy:
+      fail-fast: false
+      matrix:
+        platform: [windows-latest, macos-latest, ubuntu-latest]
+        python-version: ["3.8", "3.12"]
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Set min macOS version
+      if: runner.os == 'macOS'
+      run: |
+        echo "MACOSX_DEPLOYMENT_TARGET=10.14" >> $GITHUB_ENV
+
+    - name: Build and install
+      run: |
+        python -m pip install pytest
+        pip install --verbose .
+
+    - name: Test
+      run: python -m pytest

.github/workflows/wheels.yml

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+# From https://github.com/wjakob/nanobind_example/blob/5ce5ce57143a469e92d9ebaee9c47949ee77caa8/.github/workflows/wheels.yml
+
+name: Wheels
+
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+     - master
+  release:
+    types:
+      - published
+
+jobs:
+  build_sdist:
+    name: Build SDist
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+
+    - name: Build SDist
+      run: pipx run build --sdist
+
+    - name: Check metadata
+      run: pipx run twine check dist/*
+
+    - uses: actions/upload-artifact@v4
+      with:
+        name: dist-sdist
+        path: dist/*.tar.gz
+
+
+  build_wheels:
+    name: Wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-13, macos-14, windows-latest]
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+
+    - uses: pypa/[email protected]
+
+    - name: Verify clean directory
+      run: git diff --exit-code
+      shell: bash
+
+    - name: Upload wheels
+      uses: actions/upload-artifact@v4
+      with:
+        path: wheelhouse/*.whl
+        name: dist-${{ matrix.os }}
+
+  upload_all:
+    name: Upload if release
+    needs: [build_wheels, build_sdist]
+    runs-on: ubuntu-latest
+    if: github.event_name == 'release' && github.event.action == 'published'
+
+    steps:
+    - uses: actions/setup-python@v5
+    - uses: actions/download-artifact@v4
+      with:
+        name: dist
+        pattern: dist-*
+        merge-multiple: true
+
+    - uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        user: __token__
+        password: ${{ secrets.pypi_password }}