Setup CI to build Windows image

Author: ubruhin

.github/workflows/main.yml

@@ -0,0 +1,12 @@
+name: CI
+
+on: [push, pull_request]
+
+jobs:
+  windows-x64:
+    name: Windows x86_64
+    runs-on: windows-2025
+    steps:
+      - uses: actions/checkout@v4
+      - name: Build Docker Image
+        run: docker build -t img windowsservercore-ltsc2025-qt6.6-64bit