🚀 Add GitHub Actions workflow for PyPI publishing

- Automated testing on Python 3.7-3.12
- Build and publish to PyPI on tag creation
- Uses trusted publishers for secure deployment
- Workflow: test → build → publish

Author: esfiam

.github/workflows/publish.yml

@@ -0,0 +1,74 @@
+name: Publish to PyPI
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.7, 3.8, 3.9, '3.10', '3.11', '3.12']
+
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest
+    
+    - name: Test package
+      run: |
+        python -c "import smartlogger.auto; print('Import successful')"
+        python demo_smartlogger.py
+        python -m pytest tests/ -v
+
+  build:
+    needs: test
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.11'
+    
+    - name: Install build dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install build
+    
+    - name: Build package
+      run: python -m build
+    
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v3
+      with:
+        name: dist
+        path: dist/
+
+  publish:
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+
+    steps:
+    - name: Download artifacts
+      uses: actions/download-artifact@v3
+      with:
+        name: dist
+        path: dist/
+    
+    - name: Publish to PyPI
+      uses: pypa/gh-action-pypi-publish@release/v1