Update GitHub Actions workflow for PyPI publishing

feat(ci): Add automated publishing workflow to PyPI

.github/workflows/publish.yml

@@ -0,0 +1,75 @@
+name: Publish to PyPI
+
+# This workflow is triggered when you push a new version tag (e.g., v0.1.0, v1.2.3)
+on:
+  push:
+    tags:
+      - 'v[0-9]+.[0-9]+.[0-9]+*' # Matches v0.1.0 or v1.0.0-rc1, etc.
+  # Allows manual triggering from the GitHub Actions UI
+  workflow_dispatch:
+
+jobs:
+  build_wheels:
+    name: Build wheels on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    # Define a matrix to build for common operating systems and architectures
+    strategy:
+      matrix:
+        include:
+          - os: ubuntu-latest
+            target: x86_64
+          - os: macos-latest
+            target: x86_64
+          - os: windows-latest
+            target: x86_64
+    
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12' # Target a modern Python version
+          
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          toolchain: stable
+
+      - name: Build wheels with Maturin
+        uses: PyO3/maturin-action@v1
+        with:
+          # Use the target from the matrix (x86_64)
+          target: ${{ matrix.target }}
+          # Build a manylinux-compatible wheel for Linux/Colab users
+          manylinux: auto
+          command: build
+          args: --release --out dist --find-interpreter
+
+      - name: Upload built wheels as Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: wheels
+          path: dist
+
+  publish:
+    name: Publish to PyPI
+    needs: [build_wheels]
+    runs-on: ubuntu-latest
+    # This step will only run if the 'build_wheels' job completed successfully
+    if: startsWith(github.ref, 'refs/tags/')
+
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: wheels
+          path: dist
+          
+      - name: Publish to PyPI
+        uses: PyO3/maturin-action@v1
+        with:
+          # Use the secret we configured on GitHub
+          pypi-token: ${{ secrets.PYPI_API_TOKEN }}
+          # Command to upload all wheels in the 'dist' directory
+          command: upload
+          args: --skip-existing --non-interactive