feat[close #6] Handle desktop entries exports on apt install/apt remove

includes.container/etc/apt/apt.conf.d/99-vso-post

@@ -0,0 +1 @@
+DPkg::Post-Invoke {"/usr/share/vso/hooks/apt-post"}

includes.container/etc/apt/apt.conf.d/99-vso-pre

@@ -0,0 +1,2 @@
+DPkg::Pre-Install-Pkgs {"/usr/share/vso/hooks/apt-pre"}
+Dpkg::Tools::Options::/usr/share/vso/hooks/apt-pre::Version "1";

includes.container/usr/share/vso/hooks/apt-post

@@ -0,0 +1,11 @@
+#!/bin/bash
+
+package="$(cat /tmp/vso-transaction)"
+
+if [ -n "$SUDO_USER" ]; then
+  username=$SUDO_USER
+else
+  echo "VSO does not work with root privileges, no programs will be exported. Use 'vso export -a $package' to manually export it."
+fi
+
+su -c "/usr/bin/vso export -a $package" $username

includes.container/usr/share/vso/hooks/apt-pre

@@ -0,0 +1,6 @@
+#!/usr/bin/bash
+read line
+while read pack
+do
+    echo "$pack" > /tmp/vso-transaction
+done < <( (echo "$line"; cat ) | xargs -d '\n' dpkg-deb --show --showformat='${Package}\n')