Show "App Center" in Gnome Shell activities view

[sergio-costas]

Currently, the window in the Activities view in Gnome Shell has "snap-store" as its name, which is incorrect because this is the brand-new "App Center". The reason is that the Activities view shows the window title, but the app center doesn't set it, so it is set to the binary name.

The patch uses the translations from the .desktop file, thus it doesn't require extra effort to ensure that the name shown in the Activities view is correctly translated.

fix #1425

[AsciiWolf]

Looks good to me, however I am not an app-center developer. :-)

[sergio-costas]

Agh! :-D

[d-loose]

Thanks @sergio-costas LGTM 👍

I've pinned the mockito version, like we do in the provision monorepo.

[sergio-costas]

@d-loose Thanks!

[AsciiWolf]

LGTM

[d-loose]

In hindsight, it might be cleaner to do this in Flutter instead of further customizing the GTK application. With this change, we could change the title from within Flutter using YaruWindow.of(context).setTitle(..) and simply add 'App Center' to the l10n strings. What do you think?

[sergio-costas]

As you prefer. Certainly, simplifying the C part is a good idea.

[d-loose]

Just published yaru_window 0.2.0 with @Feichtmeier's help :)
@BLKKKBVSIK, if you find some time to implement a Flutter-based version of this fixed, as explained above, that'd be awesome!
I'm off for the remainder of the year now :)
Happy holidays everyone!