Structure "reader" in sub-features

src/features/reader/overlay/progress-bar/components/ReaderProgressBarRoot.tsx

@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) Contributors to the Suwayomi project
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
+import { styled } from '@mui/material/styles';
+import Stack from '@mui/material/Stack';
+
+export const ReaderProgressBarRoot = styled(Stack)(({ theme }) => ({
+    flexDirection: 'row',
+    justifyContent: 'center',
+    alignItems: 'center',
+    gap: theme.spacing(0.5),
+}));