[godot] Add build/pack-template.sh to zip up the template files for development.

spine-godot/build/pack-template.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+set -e
+
+dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )"
+pushd "$dir/../godot/bin" > /dev/null
+
+echo "$1" > version.txt
+zip spine-godot-templates.zip ios.zip macos.zip windows_debug_x86_64.exe windows_release_x86_64.exe linux_x11_64_debug linux_x11_64_release web_debug.zip web_release.zip android_release.apk android_debug.apk android_source.zip version.txt
+
+popd