feat: add lyric music to romanji tool

app/models/lyric_romanji_translator.py

@@ -0,0 +1,14 @@
+from pydantic import BaseModel
+from typing import List
+
+class LyricRomanjiTranslatorRequest(BaseModel):
+    folder_path: str
+
+class FileResult(BaseModel):
+    file: str
+    processed: bool
+    added_lines: int
+
+class LyricRomanjiTranslatorResponse(BaseModel):
+    results: List[FileResult]
+    status: str