add termux script

scripts/termux.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+set -e
+
+_here=`dirname $(realpath $0)`
+. ${_here}/helpers/apt-download
+[ -z "${LOADED_APT_DOWNLOAD}" ] && (echo "failed to load apt-download"; exit 1)
+
+BASE_PATH="${TUNASYNC_WORKING_DIR}"
+
+base_url="http://apt.termux.com"
+ARCHES=("aarch64" "all" "arm" "i686")
+for arch in ${ARCHES[@]}; do
+	echo "start syncing: ${arch}"
+	apt-download-binary "${base_url}" "stable" "main" "${arch}" "${BASE_PATH}" || true
+done
+echo "finished"