add LibraryContainer for max-width and background overlay

src/renderer/features/shared/components/library-container.tsx

@@ -0,0 +1,15 @@
+import { ReactNode } from 'react';
+
+import styles from './library-container.module.css';
+
+interface LibraryContainerProps {
+    children: ReactNode;
+}
+
+export const LibraryContainer = ({ children }: LibraryContainerProps) => {
+    return (
+        <div className={styles.container}>
+            <div className={styles.content}>{children}</div>
+        </div>
+    );
+};