feat: add Turkish language support (#13670)

### What problem does this PR solve?
RAGFlow had no Turkish language support. This PR adds Turkish (tr)
locale translations to the UI.

### Type of change
- [x] New Feature (non-breaking change which adds functionality)

### What problem does this PR solve?

Co-authored-by: Mustafa YILDIZ <mustafa.yildiz@cilek.com>

deepdoc/parser/mineru_parser.py

@@ -74,6 +74,7 @@ LANGUAGE_TO_MINERU_MAP = {
     'Greek': 'el',
     'Hindi': 'devanagari',
     'Bulgarian': 'cyrillic',
+    'Turkish': 'latin',
 }