ipk-source: Add luci-app-tailscale; rename directories

- Added luci-app-tailcale to ipk-source from: https://github.com/asvow/luci-app-tailscale/releases/tag/v1.2.3

- Renamed ipk-source directories to have no version number, only arch where needed.

ipk-source/luci-app-atinout-mod/root/etc/uci-defaults/set_at_port.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+# Copyright 2020-2021 Rafał Wabik (IceG) - From eko.one.pl forum
+# Licensed to the GNU General Public License v3.0.
+
+work=false
+for port in /dev/ttyUSB*
+do
+    [[ -e $port ]] || continue
+    gcom -d $port info &> /tmp/testusb
+    testUSB=`cat /tmp/testusb | grep "Error\|Can't"`
+    if [ -z "$testUSB" ]; then 
+        work=$port
+        break
+    fi
+done
+rm -rf /tmp/testusb
+
+if [ $work != false ]; then
+uci set atinout.@atinout[0].atcport=$work
+uci commit atinout
+fi