GSOC: Default plugins on desktop application

[laurent]

@makb

Update: The issue with this approach is we would need to restart the app in order to install the plugins. To solve this, I think I will also need to figure out a way to install the plugins without restarting the app. I didn't find any discussion on this topic on the forum, but if there has been, please let me know.

Alternatively, if you auto-install these plugins before the code that loads plugins, you don't need to do anything special.