[IMPR] Create items with interwiki using interwikidata.py
[IMPR] Create items with interwiki using interwikidata.py

If no foreign page had item, the script reported a conflict.
Now a new item is created with the page's interwiki.

I also removed InvalidTitle exception from the try statement
since it's already handled in textlib.getLanguageLinks.

Bug: T168575
Change-Id: Ic708890337ab8523f4fb2326771ce37b32fcc20c

magul/pywikibot-core,npdoty/pywikibot,wikimedia/pywikibot-core,happy5214/pywikibot-core,wikimedia/pywikibot-core,npdoty/pywikibot,hasteur/g13bot_tools_new,happy5214/pywikibot-core,hasteur/g13bot_tools_new,PersianWikipedia/pywikibot-core,hasteur/g13bot_tools_new,magul/pywikibot-core