Fixes issue #19 Port to Python 3

[kshitijdshah99]

@quozl I have port the necessary files to python 3, let me know if any changes required

[quozl]

Please test your work in Sugar before making a pull request. Here's what happens when I try;

1711144074.312934 WARNING root: Activity written for Python 2, consider porting to Python 3.
Traceback (most recent call last):
  File "/usr/bin/sugar-activity3", line 5, in <module>
    activityinstance.main()
  File "/usr/lib/python3/dist-packages/sugar3/activity/activityinstance.py", line 179, in main
    module = __import__(module_name)
  File "/usr/share/sugar/activities/CookieSearch.activity/SearchActivity.py", line 25, in <module>
    import telepathy
ModuleNotFoundError: No module named 'telepathy'

[kshitijdshah99]

Ok working on it