Enable dark mode and fix theme

front/src/modules/utils/utils.ts

@@ -9,3 +9,7 @@ export const humanReadableDate = (date: Date) => {
 export const getLogoUrlFromDomainName = (domainName?: string): string => {
   return `https://api.faviconkit.com/${domainName}/144`;
 };
+
+export const browserPrefersDarkMode = (): boolean => {
+  return window.matchMedia('(prefers-color-scheme: dark)').matches;
+};