[FEAT] Use generator from target site for transfer pages
[FEAT] Use generator from target site for transfer pages

For example copy wanted templates of German Wikipedia
from English Wikipedia to German Wikipedia

The command line is:
pwb transferbot -family:wikipedia -lang:en -tolang:de -wantedtemplates -target

Bug: T223713
Change-Id: Ie3f29c0b4a8be1ef6cd71bdee48f8feeb5a963cf

wikimedia/pywikibot-core,PersianWikipedia/pywikibot-core,wikimedia/pywikibot-core