CI: Download Translations

[FlexBy420]

Todo:

• Find out where translations should go on MacOS

https://crowdin.com/project/rpcs3
Fixes #16561

[Mrlinkwii]

appimage works on linux

[qurious-pixel]

@FlexBy420, for Windows Clang, Windeployqt creates the folder /share/qt6/plugins

EDIT: fixed with 309ff6b

├── share
│   └── qt6
│       ├── plugins
│       │   ├── generic
│       │   │   └── qtuiotouchplugin.dll
│       │   ├── iconengines
│       │   │   └── qsvgicon.dll
│       │   ├── imageformats
│       │   │   ├── qgif.dll
│       │   │   ├── qico.dll
│       │   │   ├── qjpeg.dll
│       │   │   └── qsvg.dll
│       │   ├── multimedia
│       │   │   └── ffmpegmediaplugin.dll
│       │   ├── networkinformation
│       │   │   ├── qglib.dll
│       │   │   └── qnetworklistmanager.dll
│       │   ├── platforms
│       │   │   └── qwindows.dll
│       │   ├── styles
│       │   │   └── qmodernwindowsstyle.dll
│       │   └── tls
│       │       ├── qcertonlybackend.dll
│       │       ├── qopensslbackend.dll
│       │       └── qschannelbackend.dll
│       └── translations
│           ├── rpcs3_es_ES.qm
│           ├── rpcs3_pl_PL.qm
│           └── rpcs3_ru_RU.qm

[hcorion]

What happens when these downloads fail? We'll often get rate limited by GitHub, especially when downloading via this API instead of downloading from a release. The build should probably still succeed even if the translation download fails.

Probably we should be publishing translation to a Release as well, but that's something to think about later.

[FlexBy420]

Once intel mac build failed to download translations iirc returned 403 error, but it did succeed anyway.
Translations are also uploaded as artifact on translation repo, I didn't really know which way would be best to download them.