Correct imported tag in GameFilter

[bbindreiter]

Hi!

As reported here #2375 and #2331 filtering for imported games is not working, which this PR attempts to fix.

Although it cannot be found in the API doc (https://lichess.org/api#tag/Games/operation/apiGamesUser), judging by the request WEB makes it must be imported instead of import

[leekaiinthesky]

Yes, please merge this pull request, if the developers have any time to do so!

@veloce Thank you for the consideration. I know this version of the mobile app isn't being worked on anymore, but it's a small edit and would fix a long-standing bug.

This resolves the following 5 open issues (including one dating back all the way to 2018!):
#911
#2331
#2375
#2428
#2521

The GameFilter enum in lila is here: https://github.com/lichess-org/lila/blob/master/modules/game/src/main/GameFilter.scala {All, Me, Rated, Win, Loss, Draw, Playing, Bookmark, Imported, Search}. So I believe @bbindreiter is correct that simply changing s/import/imported/ in his commit fixes the issue.

Thank you, and thank you to all the lichess developers. You have made such a huge contribution to the chess renaissance that we are all enjoying today!