[FA-4] Adds an event bus infrastructure, a RabbitMQ implementation and rewires existing mutations on NovelService to utilize it.

FictionArchive.Service.TranslationService/Services/TranslationEngines/DeepLTranslate/DeepLTranslationEngine.cs

@@ -1,6 +1,7 @@
 using DeepL;
 using DeepL.Model;
 using FictionArchive.Service.TranslationService.Models;
+using FictionArchive.Service.TranslationService.Models.Enums;
 using Language = FictionArchive.Common.Enums.Language;
 
 namespace FictionArchive.Service.TranslationService.Services.TranslationEngines.DeepLTranslate;
@@ -31,11 +32,20 @@ public class DeepLTranslationEngine : ITranslationEngine
         }
     }
 
-    public async Task<string?> GetTranslation(string body, Language from, Language to)
+    public async Task<TranslationResult> GetTranslation(string body, Language from, Language to)
     {
         TextResult translationResult = await _deepLClient.TranslateTextAsync(body, GetLanguageCode(from), GetLanguageCode(to));
         _logger.LogInformation("Translated text. Usage statistics: CHARACTERS BILLED {TranslationResultBilledCharacters}", translationResult.BilledCharacters);
-        return translationResult.Text;
+        return new TranslationResult()
+        {
+            OriginalText = body,
+            From = from,
+            To = to,
+            TranslationEngineKey = Key,
+            BilledCharacterCount = (uint)translationResult.BilledCharacters,
+            Status = TranslationRequestStatus.Success,
+            TranslatedText = translationResult.Text
+        };
     }
 
     private string GetLanguageCode(Language language)