added arm script

scripts/build_pestpp_mac_arm.sh

@@ -0,0 +1,17 @@
+#!/bin/sh
+realpath() {
+    [[ $1 = /* ]] && echo "$1" || echo "$PWD/${1#./}"
+}
+set -e
+
+full_path=$(realpath $0)
+script_path=$(dirname $full_path)
+cd "$script_path"/..
+
+rm -rfd build
+mkdir build
+cd build
+cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER=g++ -DFORCE_STATIC=OFF ..
+make -j
+cpack -G TGZ
+cp *.tar.gz ../