add windows ci (which literally nobody will use)

.github/workflows/windows.yml

@@ -0,0 +1,29 @@
+# This workflow will build a golang project for Windows
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+
+name: build for windows
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.24'
+
+    - name: Build
+      run: go build -o pi-im.exe .
+
+    - name: Artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: pi-binary-windows
+        path: pi-im.exe