Add GitHub workflow for Windows build

.github/workflows/workflow.yml

@@ -0,0 +1,15 @@
+---
+on:
+  push:
+    branches: master
+  pull_request:
+    branches: master
+
+jobs:
+  Windows:
+    runs-on: windows-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: ilammy/msvc-dev-cmd@v1
+      - name: Build
+        run: nmake