feat: Add mute and unmute functionality to player service and API

app/api/v1/player.py

@@ -165,6 +165,40 @@ async def set_volume(
         ) from e
 
 
+@router.post("/mute")
+async def mute(
+    current_user: Annotated[User, Depends(get_current_active_user_flexible)],  # noqa: ARG001
+) -> MessageResponse:
+    """Mute playback."""
+    try:
+        player = get_player_service()
+        await player.mute()
+        return MessageResponse(message="Playback muted")
+    except Exception as e:
+        logger.exception("Error muting playback")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail="Failed to mute playback",
+        ) from e
+
+
+@router.post("/unmute")
+async def unmute(
+    current_user: Annotated[User, Depends(get_current_active_user_flexible)],  # noqa: ARG001
+) -> MessageResponse:
+    """Unmute playback."""
+    try:
+        player = get_player_service()
+        await player.unmute()
+        return MessageResponse(message="Playback unmuted")
+    except Exception as e:
+        logger.exception("Error unmuting playback")
+        raise HTTPException(
+            status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+            detail="Failed to unmute playback",
+        ) from e
+
+
 @router.post("/mode")
 async def set_mode(
     request: PlayerModeRequest,