add script for packaging archive with android binaries

contrib/android_binary_pack/.gitignore

@@ -0,0 +1,2 @@
+archive
+i2pd_*_android_binary.zip

contrib/android_binary_pack/build-archive

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+#!/bin/bash
+
+# Copyright (c) 2013-2017, The PurpleI2P Project
+#
+# This file is part of Purple i2pd project and licensed under BSD3
+#
+# See full license text in LICENSE file at top of project tree
+
+GITDESC=$(git describe --tags)
+
+declare -A ABILIST=(
+	["armeabi-v7a"]="armv7l"
+	["arm64-v8a"]="aarch64"
+	["x86"]="x86"
+	["x86_64"]="x86_64"
+)
+
+# Remove old files and archives
+if [ -d archive ]; then
+	rm -r archive
+fi
+
+if [ -f i2pd_*_android_binary.zip ]; then
+	rm i2pd_*_android_binary.zip
+fi
+
+# Prepare files for package
+mkdir archive
+
+for ABI in "${!ABILIST[@]}"; do
+	if [ -f ../../android_binary_only/libs/${ABI}/i2pd ]; then
+		cp ../../android_binary_only/libs/${ABI}/i2pd archive/i2pd-${ABILIST[$ABI]}
+	fi
+done
+
+cp i2pd archive/i2pd
+cp -rH ../../android/assets/* archive/
+
+# Compress files
+cd archive
+zip -r6 ../i2pd_${GITDESC}_android_binary.zip .
+
+# Remove temporary folder
+cd ..
+rm -r archive

contrib/android_binary_pack/i2pd

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+#!/bin/sh
+
+# Copyright (c) 2013-2019, The PurpleI2P Project
+#
+# This file is part of Purple i2pd project and licensed under BSD3
+#
+# See full license text in LICENSE file at top of project tree
+#
+# That script written for use with Termux.
+
+# https://stackoverflow.com/a/246128
+SOURCE="${0}"
+while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
+  DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )"
+  SOURCE="$(readlink "$SOURCE")"
+  [[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
+done
+DIR="$( cd -P "$( dirname "$SOURCE" )" >/dev/null 2>&1 && pwd )"
+
+arch=$(uname -m)
+
+screenfind=$(which screen)
+if [ -z $screenfind ]; then
+	echo "Can't find 'screen' installed. That script needs it!";
+	exit 1;
+fi
+
+if [ -z i2pd-$arch ]; then
+	echo "Can't find i2pd binary for your archtecture.";
+	exit 1;
+fi
+
+screen -AmdS i2pd ./i2pd-$arch --datadir=$DIR