Add new story for darkmode (#317)

* Add a new story for dark mode

* Reorganize storybook menu

* Fix command menu margins

* Fix tests

front/src/modules/ui/components/menu/stories/DropdownMenu.stories.tsx

@@ -16,7 +16,7 @@ import { DropdownMenuSelectableItem } from '../DropdownMenuSelectableItem';
 import { DropdownMenuSeparator } from '../DropdownMenuSeparator';
 
 const meta: Meta<typeof DropdownMenu> = {
-  title: 'Components/DropdownMenu',
+  title: 'UI/Menu/DropdownMenu',
   component: DropdownMenu,
 };
 

front/src/modules/ui/layout/states/isThemeEnabledState.ts

@@ -1,6 +0,0 @@
-import { atom } from 'recoil';
-
-export const isThemeEnabledState = atom<boolean>({
-  key: 'isThemeEnabledState',
-  default: true,
-});