Uniformize folder structure (#693)

* Uniformize folder structure

* Fix icons

* Fix icons

* Fix tests

* Fix tests

front/src/modules/ui/themes/components/AppThemeProvider.tsx

@@ -0,0 +1,14 @@
+import { ThemeProvider } from '@emotion/react';
+
+import { darkTheme, lightTheme } from '@/ui/themes/themes';
+import { browserPrefersDarkMode } from '~/utils';
+
+type OwnProps = {
+  children: JSX.Element;
+};
+
+export function AppThemeProvider({ children }: OwnProps) {
+  const selectedTheme = browserPrefersDarkMode() ? darkTheme : lightTheme;
+
+  return <ThemeProvider theme={selectedTheme}>{children}</ThemeProvider>;
+}