Add Windows release binary builds

Author: tstellar

.github/workflows/release-binaries-windows.yml

@@ -0,0 +1,17 @@
+name: Release Binaries Windows
+
+on:
+  pull:
+
+
+permissions:
+  contents: read # Default everything to read-only
+
+jobs:
+  build-windows-release:
+    runs-on: depot-windows-2022-16
+    if: github.repository_owner == 'llvm'
+    steps:
+      - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+      - run: |
+        llvm\utils\release\build_llvm_release.bat --x64 --version 20.1.8