fix: move ThemeSwitcher and PageLoader to widgets layer

src/app/providers/router/ui/AppRouter.tsx

@@ -1,7 +1,7 @@
 import React, { memo, Suspense, useCallback } from 'react';
 import { Route, Routes } from 'react-router-dom';
 
-import { PageLoader } from 'shared/ui/PageLoader';
+import { PageLoader } from 'widgets/PageLoader';
 import { routerConfig, AppRoutesProps } from 'shared/config/routerConfig';
 
 import { RequireAuth } from './RequireAuth';

src/shared/ui/index.ts

@@ -1,4 +1,4 @@
 export { Button } from './Button';
 export { AppLink } from './AppLink';
-export { ThemeSwitcher } from './ThemeSwitcher';
+export { ThemeSwitcher } from '../../widgets/ThemeSwitcher';
 export { LangSwitcher } from './LangSwitcher';

src/shared/ui/PageLoader/ui/PageLoader.tsx → src/widgets/PageLoader/ui/PageLoader.tsx

@@ -1,6 +1,6 @@
 import { classNames } from 'shared/lib/classNames';
+import { Loader } from 'shared/ui/Loader';
 
-import { Loader } from '../../Loader';
 import cls from './PageLoader.module.scss';
 
 interface PageLoaderProps {

src/shared/ui/ThemeSwitcher/ui/ThemeSwitcher.tsx → src/widgets/ThemeSwitcher/ui/ThemeSwitcher.tsx

@@ -4,8 +4,7 @@ import { classNames } from 'shared/lib/classNames';
 import LightIcon from 'shared/assets/icons/theme-light.svg';
 import DarkIcon from 'shared/assets/icons/theme-dark.svg';
 import { Theme, useTheme } from 'app/providers/ThemeProvider';
-
-import { Button, ButtonTheme } from '../../Button';
+import { Button, ButtonTheme } from 'shared/ui/Button';
 
 interface ThemeSwitcherProps {
     className?: string;