feat: add OCR language extension configuration and documentation

- Introduced `compose.ocr-languages.yml` for installing additional Tesseract OCR language packs during container startup.
- Updated documentation to include new OCR language extension options and usage scenarios.
- Enhanced existing documentation with references to the new OCR language extension guide.
- Improved test coverage for the deark converter and formats, ensuring accurate format handling and error management.
- Refactored code to streamline file system operations and improve readability.

docs/範例配置/說明文件.md

@@ -6,12 +6,13 @@
 
 ## 範例檔案
 
-| 檔案                       | 用途       | 說明             |
-| -------------------------- | ---------- | ---------------- |
-| `compose.minimal.yml`      | 快速啟動   | 最精簡配置       |
-| `compose.production.yml`   | 生產環境   | 包含安全設定     |
-| `compose.with-traefik.yml` | 反向代理   | Traefik 整合     |
-| `nginx.example.conf`       | Nginx 設定 | 反向代理設定範例 |
+| 檔案                        | 用途         | 說明              |
+| --------------------------- | ------------ | ----------------- |
+| `最小配置.yml`              | 快速啟動     | 最精簡配置        |
+| `生產環境配置.yml`          | 生產環境     | 包含安全設定      |
+| `compose.ocr-languages.yml` | OCR 語言擴展 | 安裝額外 OCR 語言 |
+| `Traefik配置.yml`           | 反向代理     | Traefik 整合      |
+| `Nginx範例配置.conf`        | Nginx 設定   | 反向代理設定範例  |
 
 ---