Remove CharacterComponent and CharacterDetail components

- Deleted `CharacterComponent` and `CharacterDetail` files from the project.
- Refactored related logic to improve code maintainability and reduce redundancy.

electron/database/repositories/series.repo.ts

@@ -539,4 +539,15 @@ export default class SeriesRepo {
             }
         }
     }
+
+    /**
+     * Checks if a series exists for a user (alias for isSeriesExist).
+     * @param userId - The unique identifier of the user
+     * @param seriesId - The unique identifier of the series
+     * @param lang - The language for error messages ('fr' or 'en')
+     * @returns True if the series exists
+     */
+    public static seriesExists(userId: string, seriesId: string, lang: 'fr' | 'en' = 'fr'): boolean {
+        return this.isSeriesExist(userId, seriesId, lang);
+    }
 }