Add script to zip release

This script exists on master. However getting those changes could be
difficult...

OHM-929

Author: MattyJ007

packaging/build-release-zip.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+set -eu
+
+if (( $# < 1)); then
+  echo "OpenHIM release build: Builds a specific tagged release ready for deployment";
+  echo "Usage: $0 TAG";
+  exit 0;
+fi
+
+tag=$1;
+shift;
+
+echo "NB!"
+echo "To create the tagged build, various git interactions need to take place. "
+echo "This will create a temporary branch as well as remove any changes you have havent yet committed"
+read -p "Do you wish to proceed? [Y/y]" -n 1 -r
+
+echo ""
+
+if [[ $REPLY =~ ^[Yy]$ ]]; then
+  cd ../
+
+  echo "Git: setup branch/tag"
+  git checkout -- .
+  git checkout master
+  git pull origin master
+  git fetch --tags
+  git checkout tags/$tag -b "build-release-$tag"
+
+  echo "npm: clean and build package"
+  rm -rf node_modules
+  npm install
+  npm run build
+
+  echo "zip: build release version: $tag"
+  zip \
+    -i 'lib/*' 'config/*' 'node_modules/*' 'docs/*' 'resources/*' 'CHANGELOG.md' 'LICENSE' 'package.json' 'package-lock.json' 'README.md' \
+    -r packaging/build.openhim-core.$tag.zip .
+
+  echo "Git cleanup"
+  git checkout -- .
+  git checkout master
+  git branch -D "build-release-$tag"
+
+  echo "New OpenHIM Core build zipped";
+fi