init basic tictactoe game

src/tictactoe/Board.tsx

@@ -0,0 +1,11 @@
+import Square from "./Square";
+
+export default function Board({ squares, onClick }) {
+  return (
+    <div className="board">
+      {squares.map((value, i) => (
+        <Square key={i} value={value} onClick={() => onClick(i)} />
+      ))}
+    </div>
+  );
+}