Imply Nijigaku movie series

BUR #28016 has been approved by @nonamethanks.

create implication love_live!_nijigasaki_high_school_idol_club_kanketsu-hen -> love_live!_nijigasaki_high_school_idol_club

It is a trilogy of movies ending the main anime, not unlike Love Live! The School Idol Movie and Love Live! Sunshine!! The School Idol Movie Over The Rainbow before it. Damn, that title is long...

Maybe there's no need to suggest a separate movie tags for Love Live franchise when these are universally shared for each series except for spinoffs like Genjitsu no Yohane. And like those aforementioned movies, it is continuation of the TV series.

This bulk update request is pending automatic rejection in 5 days.

The bulk update request #28016 (forum #290451) has been approved by @nonamethanks.