Adds a new message type, prefixed "action:"
that will perform the same task as mouse actions.
This could be used to control menu modules:
echo action:menu-open-1 > /tmp/lemonbuddy_mqueue.<pid>
echo action:menu-close > /tmp/lemonbuddy_mqueue.<pid>
Ref #84
Add a new module that allow users to configure hooks
on received ipc messages. The hook will execute the defined
shell script and the output of the script will be used
as the module content.
Ref #84
