feat: add GitHub Actions workflow to build Windows executable

Author: ang3lo-azevedo

.github/workflows/windows-exe.yml

@@ -0,0 +1,40 @@
+name: Build Windows executable
+
+on:
+  workflow_dispatch:
+  push:
+    branches: ["main"]
+    tags: ["v*"]
+
+jobs:
+  build-windows-exe:
+    runs-on: windows-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Install dependencies
+        shell: pwsh
+        run: |
+          python -m pip install --upgrade pip
+          if (Test-Path "requirements.txt") {
+            pip install -r requirements.txt
+          }
+          pip install pyinstaller
+
+      - name: Build executable
+        shell: pwsh
+        run: |
+          pyinstaller --onefile --windowed main.py --name ist-fenix-auto-enroller
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ist-fenix-auto-enroller-windows
+          path: dist/ist-fenix-auto-enroller.exe