Add Windows arm64 build to GitHub actions

.github/workflows/win.yml

@@ -44,13 +44,16 @@ jobs:
 
   windows:
     name: Windows
-    runs-on: windows-latest
+    runs-on: ${{ matrix.arch == 'arm64' && 'windows-11-arm' || 'windows-latest' }}
 
     strategy:
       matrix:
-        arch: [x64_x86, x64]
+        arch: [x64_x86, x64, arm64]
         qt: ["", qt6]
         generator: ["", "Ninja Multi-Config"]
+        exclude:
+          - arch: arm64
+            qt: ""
 
     env:
       UPLOAD_ARTIFACT: "true"
@@ -83,7 +86,7 @@ jobs:
         shell: bash
         run: |
           DOCPATH=$TBUILD/$REPO_NAME/docs/building-win.md
-          [ "${{ matrix.arch }}" != x64_x86 ] && DOCPATH=$TBUILD/$REPO_NAME/docs/building-win-${{ matrix.arch }}.md
+          [ "${{ matrix.arch }}" = x64 ] && DOCPATH=$TBUILD/$REPO_NAME/docs/building-win-x64.md
           SDK="$(grep "SDK version" $DOCPATH | sed -r 's/.*\*\*(.*)\*\* SDK version.*/\1/')"
           echo "SDK=$SDK" >> $GITHUB_ENV
 
@@ -155,6 +158,7 @@ jobs:
           if [ -n "${{ matrix.arch }}" ]; then
             case "${{ matrix.arch }}" in
               x64_x86) ARCH="x86";;
+              arm64) ARCH="arm";;
               *) ARCH="${{ matrix.arch }}";;
             esac
             echo "Architecture from matrix: $ARCH"