Add rating

client/patterns/rating/Star.tsx

@@ -0,0 +1,17 @@
+import React from 'react';
+
+import './star.css';
+
+interface StarProps {
+    isActive: boolean;
+}
+
+const Star: React.FC<StarProps> = ({ isActive }) => {
+    return (
+        <button className="star">
+            {isActive ? '★' : '☆'}
+        </button>
+    );
+};
+
+export default Star;