[FEATURE] WIP!!! CSH files for smart objects

WIP. Generate CSH files for extension smart objects.

Change-Id: Iab96d7a12a433af2bcfe33817a5ec17e837956c5
Reviewed-on: http://review.typo3.org/32594
Reviewed-by: Tim Lochmüller <tim@fruit-lab.de>
Tested-by: Tim Lochmüller <tim@fruit-lab.de>