[@mantine/core] Fix missing sub Menu components exports (#8419)

* feat: export MenuSub components and types

* style(prettier): fix formatting to satisfy ci

Author: Visualizeit

packages/@mantine/core/src/components/Menu/MenuSub/MenuSub.tsx

@@ -12,7 +12,7 @@ export type MenuSubFactory = Factory<{
   props: MenuSubProps;
 }>;
 
-interface MenuSubProps extends __PopoverProps {
+export interface MenuSubProps extends __PopoverProps {
   children: React.ReactNode;
 
   /** Called with current state when dropdown opens or closes */

packages/@mantine/core/src/components/Menu/index.ts

@@ -4,10 +4,18 @@ export { MenuItem } from './MenuItem/MenuItem';
 export { MenuLabel } from './MenuLabel/MenuLabel';
 export { MenuDropdown } from './MenuDropdown/MenuDropdown';
 export { MenuTarget } from './MenuTarget/MenuTarget';
+export { MenuSub } from './MenuSub/MenuSub';
+export { MenuSubDropdown } from './MenuSubDropdown/MenuSubDropdown';
+export { MenuSubItem } from './MenuSubItem/MenuSubItem';
+export { MenuSubTarget } from './MenuSubTarget/MenuSubTarget';
 
 export type { MenuFactory, MenuProps, MenuStylesNames } from './Menu';
 export type { MenuDividerProps } from './MenuDivider/MenuDivider';
 export type { MenuItemProps } from './MenuItem/MenuItem';
 export type { MenuLabelProps } from './MenuLabel/MenuLabel';
 export type { MenuDropdownProps } from './MenuDropdown/MenuDropdown';
 export type { MenuTargetProps } from './MenuTarget/MenuTarget';
+export type { MenuSubProps } from './MenuSub/MenuSub';
+export type { MenuSubDropdownProps } from './MenuSubDropdown/MenuSubDropdown';
+export type { MenuSubItemProps } from './MenuSubItem/MenuSubItem';
+export type { MenuSubTargetProps } from './MenuSubTarget/MenuSubTarget';