Add GitHub Actions workflow for Windows executable build

.github/workflows/build-windows.yml

@@ -0,0 +1,61 @@
+name: Build Windows Executable
+
+on:
+  push:
+    branches: [ main, master, develop ]
+  pull_request:
+    branches: [ main, master, develop ]
+
+jobs:
+  build-windows:
+    runs-on: windows-latest
+    
+    strategy:
+      matrix:
+        python-version: ['3.11']
+    
+    steps:
+    - uses: actions/checkout@v3
+    
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements_gui.txt
+        pip install pyinstaller
+    
+    - name: Build executable with PyInstaller
+      run: python build_exe.py
+    
+    - name: Upload Windows executable as artifact
+      uses: actions/upload-artifact@v3
+      with:
+        name: LabelPrinter-Windows
+        path: dist/LabelPrinter.exe
+        retention-days: 30
+    
+    - name: Create Release
+      if: startsWith(github.ref, 'refs/tags/')
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        tag_name: ${{ github.ref }}
+        release_name: Release ${{ github.ref }}
+        draft: false
+        prerelease: false
+    
+    - name: Upload to Release
+      if: startsWith(github.ref, 'refs/tags/')
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }}
+        asset_path: ./dist/LabelPrinter.exe
+        asset_name: LabelPrinter.exe
+        asset_content_type: application/octet-stream