New: Support for specific locale in `Movie TitleFirstCharacter` naming token

Fixes #8044

frontend/src/Settings/MediaManagement/Naming/NamingModal.js

@@ -58,6 +58,7 @@ const movieTokens = [
   { token: '{Movie OriginalTitle}', example: 'Τίτλος ταινίας' },
   { token: '{Movie CleanOriginalTitle}', example: 'Τίτλος ταινίας' },
   { token: '{Movie TitleFirstCharacter}', example: 'M' },
+  { token: '{Movie TitleFirstCharacter:DE}', example: 'T' },
   { token: '{Movie Collection}', example: 'The Movie Collection' },
   { token: '{Movie Certification}', example: 'R' },
   { token: '{Release Year}', example: '2009' }

src/NzbDrone.Core/Organizer/FileNameBuilder.cs

@@ -248,7 +248,7 @@ namespace NzbDrone.Core.Organizer
             tokenHandlers["{Movie Title}"] = m => GetLanguageTitle(movie, m.CustomFormat);
             tokenHandlers["{Movie CleanTitle}"] = m => CleanTitle(GetLanguageTitle(movie, m.CustomFormat));
             tokenHandlers["{Movie TitleThe}"] = m => TitleThe(movie.Title);
-            tokenHandlers["{Movie TitleFirstCharacter}"] = m => TitleThe(movie.Title).Substring(0, 1).FirstCharToUpper();
+            tokenHandlers["{Movie TitleFirstCharacter}"] = m => TitleThe(GetLanguageTitle(movie, m.CustomFormat)).Substring(0, 1).FirstCharToUpper();
             tokenHandlers["{Movie OriginalTitle}"] = m => movie.MovieMetadata.Value.OriginalTitle ?? string.Empty;
             tokenHandlers["{Movie CleanOriginalTitle}"] = m => CleanTitle(movie.MovieMetadata.Value.OriginalTitle) ?? string.Empty;