added AR translations to the Friendica addons

Thanks to the work of طاهر, Farida Khalaf, محمد أحمد, abidin toumi, Abdullah Alsabi, ButterflyOfFire and ominds the translation of Friendica into Arabic has crossed the magic 50% progress mark, so we now include their work into the addons repository.

libertree/lang/ar/messages.po

@@ -0,0 +1,48 @@
+# ADDON libertree
+# Copyright (C)
+# This file is distributed under the same license as the Friendica libertree addon package.
+# 
+# 
+# Translators:
+# Farida Khalaf <faridakhalaf@hotmail.com>, 2021
+msgid ""
+msgstr ""
+"Project-Id-Version: friendica\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2021-02-01 18:15+0100\n"
+"PO-Revision-Date: 2021-02-21 18:37+0000\n"
+"Last-Translator: Farida Khalaf <faridakhalaf@hotmail.com>\n"
+"Language-Team: Arabic (http://www.transifex.com/Friendica/friendica/language/ar/)\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"Language: ar\n"
+"Plural-Forms: nplurals=6; plural=n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n%100>=3 && n%100<=10 ? 3 : n%100>=11 && n%100<=99 ? 4 : 5;\n"
+
+#: libertree.php:37
+msgid "Post to libertree"
+msgstr ""
+
+#: libertree.php:71 libertree.php:75
+msgid "libertree Export"
+msgstr ""
+
+#: libertree.php:79
+msgid "Enable Libertree Post Addon"
+msgstr ""
+
+#: libertree.php:84
+msgid "Libertree API token"
+msgstr ""
+
+#: libertree.php:89
+msgid "Libertree site URL"
+msgstr ""
+
+#: libertree.php:94
+msgid "Post to Libertree by default"
+msgstr ""
+
+#: libertree.php:100
+msgid "Save Settings"
+msgstr "حفظ الإعدادات"

libertree/lang/ar/strings.php

@@ -0,0 +1,8 @@
+<?php
+
+if(! function_exists("string_plural_select_ar")) {
+function string_plural_select_ar($n){
+	$n = intval($n);
+	if ($n==0) { return 0; } else if ($n==1) { return 1; } else if ($n==2) { return 2; } else if ($n%100>=3 && $n%100<=10) { return 3; } else if ($n%100>=11 && $n%100<=99) { return 4; } else  { return 5; }
+}}
+$a->strings['Save Settings'] = 'حفظ الإعدادات';