feat: update layout and components for improved user experience, add theme toggle and main navigation

thoughts-frontend/components/theme-provider.tsx

@@ -0,0 +1,11 @@
+"use client";
+
+import * as React from "react";
+import {
+  ThemeProvider as NextThemesProvider,
+  ThemeProviderProps,
+} from "next-themes";
+
+export function ThemeProvider({ children, ...props }: ThemeProviderProps) {
+  return <NextThemesProvider {...props}>{children}</NextThemesProvider>;
+}