[openvpnadapter] build for arm64vs x86_64

.github/workflows/build_openvpnadapter_apple.yml

@@ -40,7 +40,7 @@ jobs:
           echo "Using macOS SDK version: $MACOSX_SDK"
           echo "::set-output name=sdk::$MACOSX_SDK"
 
-      - name: Build OpenVPNAdapter
+      - name: Build OpenVPNAdapter for x86_64
         run: |
           cd OpenVPNAdapter
           export XCODEBUILD="/usr/bin/xcodebuild"
@@ -49,8 +49,28 @@ jobs:
             -xcconfig Configuration/amnezia.xcconfig \
             -sdk macosx${{ steps.sdk_version.outputs.sdk }} \
             -destination 'generic/platform=macOS' \
+            -arch x86_64 \
             -project OpenVPNAdapter.xcodeproj
 
+      - name: Build OpenVPNAdapter for arm64
+        run: |
+          cd OpenVPNAdapter
+          export XCODEBUILD="/usr/bin/xcodebuild"
+          $XCODEBUILD -scheme OpenVPNAdapter \
+            -configuration Release \
+            -xcconfig Configuration/amnezia.xcconfig \
+            -sdk macosx${{ steps.sdk_version.outputs.sdk }} \
+            -destination 'generic/platform=macOS' \
+            -arch arm64 \
+            -project OpenVPNAdapter.xcodeproj
+
+      - name: Create Universal Binary
+        run: |
+          cd OpenVPNAdapter/build/Release-macos
+          lipo -create -output OpenVPNAdapter.framework/OpenVPNAdapter \
+            x86_64/OpenVPNAdapter.framework/OpenVPNAdapter \
+            arm64/OpenVPNAdapter.framework/OpenVPNAdapter
+
       - name: Remove CodeSignature
         run: |
           echo "Removing CodeSignature if exists..."