Community Wishlist Survey 2022/Add $wgImportSources to ManageWiki

Proposed by MLastCelebration

Proposal summary: Add mw:Manual:$wgImportSources to ManageWiki. It would be very helpful if a wiki is moving some pages away from Fandom or some other farm, or we need to collate information from multiple other wikis.

Full proposal: See title. Templates specific to certain types of wikis could also be easily sent through if I didn't have to go to Phabricator to put them on the Special:Import dropdown.