update python example with gsettings and config widgets

[lachlan-00]

After finishing my plugin i took the sample and updated it with some settings and widgets. https://github.com/lachlan-00/budgie-python-example-applet

I used code from @yursan9 and the caffeine plugin to allow it to build and install. The settings don't really do anything with the plugin but they are bound to the widgets.

Do you want the sample to keep the make file for install? i think all that it needs if you do is the gstettings path/file added and it should be fine.