add release workflow

.github/workflows/release.yaml

@@ -0,0 +1,58 @@
+name: Publish Release
+
+on:
+  push:
+    branches:
+      - main  # Trigger on push to main branch
+
+jobs:
+  release:
+    name: Create GitHub Release
+    runs-on: ubuntu-latest
+
+    steps:
+    # Step 1: Checkout the code
+    - name: Checkout code
+      uses: actions/checkout@v3
+
+    # Step 2: Set up Python
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+
+    # Step 3: Install dependencies
+    - name: Install dependencies
+      run: pip install toml
+
+    # Step 4: Extract version from pyproject.toml
+    - name: Extract version
+      id: get_version
+      run: |
+        VERSION=$(python -c "import toml; print(toml.load('pyproject.toml')['project']['version'])")
+        echo "VERSION=$VERSION" >> $GITHUB_ENV
+
+    # Step 5: Check if tag already exists
+    - name: Check if tag exists
+      id: check_tag
+      run: |
+        if git rev-parse "v${{ env.VERSION }}" >/dev/null 2>&1; then
+          echo "Tag v${{ env.VERSION }} already exists."
+          exit 0
+        fi
+
+    # Step 6: Create and push a new tag (if it doesn't exist)
+    - name: Create Git tag
+      run: |
+        git config --global user.name "github-actions[bot]"
+        git config --global user.email "github-actions[bot]@users.noreply.github.com"
+        git tag -a "v${{ env.VERSION }}" -m "Release v${{ env.VERSION }}"
+        git push origin "v${{ env.VERSION }}"
+
+    # Step 7: Create GitHub release (if tag didn't exist)
+    - name: Create GitHub Release
+      uses: softprops/action-gh-release@v1
+      with:
+        tag_name: "v${{ env.VERSION }}"
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}