Move "core" folder out of "features" into "base"

src/base/components/menu/IconMenuItem.tsx

@@ -0,0 +1,51 @@
+/*
+ * 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/.
+ */
+
+/*
+ * src: https://github.com/webzep/mui-nested-menu/blob/main/packages/mui-nested-menu/src/components/IconMenuItem.tsx (2024-04-20 01:42)
+ */
+
+import ListItemIcon from '@mui/material/ListItemIcon';
+import MenuItem, { MenuItemProps as MuiMenuItemProps } from '@mui/material/MenuItem';
+import { SxProps, Theme } from '@mui/material/styles';
+import React, { forwardRef, RefObject } from 'react';
+
+import { OverridableComponent } from '@mui/material/OverridableComponent';
+import { SvgIconTypeMap } from '@mui/material/SvgIcon';
+import ListItemText from '@mui/material/ListItemText';
+
+type IconMenuItemProps = {
+    MenuItemProps?: MuiMenuItemProps;
+    className?: string;
+    disabled?: boolean;
+    label?: string;
+    renderLabel?: () => React.ReactNode;
+    LeftIcon?: OverridableComponent<SvgIconTypeMap> & { muiName: string };
+    onClick?: (event: React.MouseEvent<HTMLElement>) => void;
+    ref?: RefObject<HTMLLIElement | null>;
+    RightIcon?: OverridableComponent<SvgIconTypeMap> & { muiName: string };
+    sx?: SxProps<Theme>;
+};
+
+export const IconMenuItem = forwardRef<HTMLLIElement, IconMenuItemProps>(
+    ({ MenuItemProps, className, label, LeftIcon, renderLabel, RightIcon, ...props }, ref) => (
+        <MenuItem {...MenuItemProps} ref={ref} className={className} {...props}>
+            {LeftIcon && (
+                <ListItemIcon>
+                    <LeftIcon fontSize="small" />
+                </ListItemIcon>
+            )}
+            <ListItemText>{label}</ListItemText>
+            {RightIcon && (
+                <ListItemIcon style={{ minWidth: 0 }}>
+                    <RightIcon fontSize="small" />
+                </ListItemIcon>
+            )}
+        </MenuItem>
+    ),
+);