UPDATE: Added Button Light/Dark Theme

frontend/src/components/Layout/Theme.tsx

@@ -0,0 +1,18 @@
+import React from 'react'
+
+interface ThemeProps {
+    children? : React.ReactNode;
+    onClick : () => void;
+}
+
+const Theme: React.FC<ThemeProps> = ( {onClick, children} ) => {
+  return (
+    <button 
+    onClick={onClick}
+    className={` p-2 text-[1.5rem] text-white hover:text-purple-600 bg-black/30 hover:bg-black/80 rounded-md border border-gray-300 hover:border-purple-500 hover:border-b-4 hover:border-l-4 active:border-b-2 active:border-l-2 transition-all`}>
+        Light/Dark
+    </button>
+  )
+}
+
+export default Theme