Register the Nuxeo Drive data folder as a Favorite in OSX Finder

The newly created ~/Nuxeo Drive folder is not easily accessible under OSX especially under 10.8 / Mountain Lion where the home folder is not visible by default in the finder and other "file browse" menu typically used to open or save a document in applications such as LibreOffice or Keynote.

We should thus register the Nuxeo Drive folder as a Finder favorite when creating it.

To achieve this, we can use the Foundation / LaunchServices API available from PyObjC on OSX platforms:

http://www.opensource.apple.com/source/pyobjc/pyobjc-26/pyobjc/pyobjc-framework-LaunchServices/PyObjCTest/test_lssharedfilelist.py

For instance, we could do something such as:

from LaunchServices import *
lst = LSSharedFileListCreate(None, kLSSharedFileListFavoriteItems, None)
        item = LSSharedFileListInsertItemURL(lst, kLSSharedFileListItemBeforeFirst, "Nuxeo Drive", None, 
                CFURLCreateWithString(None, "file:///Users/user/Nuxeo Drive", None), {}, [])