Add Chinese Bilingual language (#7623)

Closes https://github.com/jellyfin/jellyfin-plugin-opensubtitles/issues/103

Emby.Server.Implementations/Localization/iso6392.txt

@@ -77,6 +77,7 @@ chb|||Chibcha|chibcha
 che||ce|Chechen|tchétchène
 chg|||Chagatai|djaghataï
 chi|zho|zh|Chinese|chinois
+chi|zho|ze|Chinese; Bilingual|chinois
 chi|zho|zh-tw|Chinese; Traditional|chinois
 chi|zho|zh-hk|Chinese; Hong Kong|chinois
 chk|||Chuukese|chuuk

tests/Jellyfin.Server.Implementations.Tests/Localization/LocalizationManagerTests.cs

@@ -40,7 +40,7 @@ namespace Jellyfin.Server.Implementations.Tests.Localization
             await localizationManager.LoadAll();
             var cultures = localizationManager.GetCultures().ToList();
 
-            Assert.Equal(190, cultures.Count);
+            Assert.Equal(191, cultures.Count);
 
             var germany = cultures.FirstOrDefault(x => x.TwoLetterISOLanguageName.Equals("de", StringComparison.Ordinal));
             Assert.NotNull(germany);