chore: import upstream snapshot with attribution

package_scripts/ios/xcodebuildiOS.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+set -e
+
+usage() {
+    echo "Usage: $0 -o path [-c]"
+    echo -e "\t-o package files output directory"
+    exit 1
+}
+
+while getopts "o:c:h" opt; do
+  case "$opt" in
+    o ) path=$OPTARG ;;
+    h|? ) usage ;;
+  esac
+done
+
+rm -rf $path && mkdir -p $path
+PACKAGE_PATH=$(realpath $path)
+
+# build framework
+xcodebuild build \
+-project project/ios/MNN.xcodeproj \
+-target MNN \
+-destination "platform=iOS,id=dvtdevice-DVTiPhonePlaceholder-iphoneos:placeholder,name=Any iOS Device" \
+SYMROOT=$PACKAGE_PATH \
+CODE_SIGN_IDENTITY="" \
+CODE_SIGNING_REQUIRED=NO