added build script

build.sh

@@ -0,0 +1,27 @@
+rm -rf build-macos
+mkdir build-macos && cd build-macos
+cmake .. -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64"  -DCMAKE_OSX_DEPLOYMENT_TARGET=14.0
+ninja
+libtool -static -o Build/lib/libOpenMesh.a Build/lib/libOpenMeshCore.a Build/lib/libOpenMeshTools.a
+cd ..
+
+
+rm -rf build-ios
+mkdir build-ios && cd build-ios
+cmake .. -G Ninja -DCMAKE_BUILD_TYPE=Release -DCMAKE_SYSTEM_NAME=iOS -DCMAKE_OSX_ARCHITECTURES="arm64"  -DCMAKE_OSX_DEPLOYMENT_TARGET=16.0
+ninja
+libtool -static -o Build/lib/libOpenMesh.a Build/lib/libOpenMeshCore.a Build/lib/libOpenMeshTools.a
+cd ..
+
+rm -rf build-headers
+rsync -av --include='*/' --include='*.hh' --exclude='*' src/OpenMesh/Core build-headers/
+rsync -av --include='*/' --include='*.hh' --exclude='*' src/OpenMesh/Tools build-headers/
+
+rm -rf build-xcframework
+mkdir build-xcframework
+
+
+xcodebuild -create-xcframework \
+  -library build-macos/Build/lib/libOpenMesh.a -headers build-headers \
+  -library build-ios/Build/lib/libOpenMesh.a -headers build-headers \
+  -output build-xcframework/OpenMesh.xcframework