feat: Add endpoint to retrieve sounds with optional type filtering and implement corresponding repository method

app/repositories/sound.py

@@ -1,7 +1,7 @@
 """Sound repository for database operations."""
 
 from sqlalchemy import func
-from sqlmodel import select
+from sqlmodel import col, select
 from sqlmodel.ext.asyncio.session import AsyncSession
 
 from app.core.logging import get_logger
@@ -95,3 +95,15 @@ class SoundRepository(BaseRepository[Sound]):
                 sound_type,
             )
             raise
+
+    async def get_by_types(self, sound_types: list[str] | None = None) -> list[Sound]:
+        """Get sounds by types. If types is None or empty, return all sounds."""
+        try:
+            statement = select(Sound)
+            if sound_types:
+                statement = statement.where(col(Sound.type).in_(sound_types))
+            result = await self.session.exec(statement)
+            return list(result.all())
+        except Exception:
+            logger.exception("Failed to get sounds by types: %s", sound_types)
+            raise