[xfce] enable tap to click by default on pinebook pro devices

overlays/xfce/etc/skel/.config/xfce4/xfconf/xfce-perchannel-xml/pointers.xml

+<?xml version="1.0" encoding="UTF-8"?>
+
+<channel name="pointers" version="1.0">
+  <property name="HAILUCK_COLTD_USB_KEYBOARD_Touchpad" type="empty">
+    <property name="Properties" type="empty">
+      <property name="libinput_Tapping_Enabled" type="int" value="1"/>
+    </property>
+  </property>
+</channel>