apps: add helper script to get build app from github actions

Author: Phantop

apps/getapp

@@ -0,0 +1,7 @@
+#!/bin/sh
+set -e # exit on failure
+IFS=$(printf '\n\t') # smarter ifs
+
+gh run download -n "$1"
+chmod +x "$1"
+mv "$1" "$(dirname "$(realpath "$0")")/bin"