Move copy link button to button box

src/web-socket-handler.tsx

@@ -224,6 +224,15 @@ class GameServer {
           </button>,
         );
       }
+    } else if (this.gomoku.status === 'waiting') {
+      buttons.push(
+        <button id="copy-link-button" onclick="copyGameLink()">
+          <svg class="icon" alt="Copy">
+            <use href="/icons/clipboard-copy.svg"></use>
+          </svg>
+          <span id="copy-link-text">Click to copy game link!</span>
+        </button>,
+      );
     }
 
     conn.ws.send(<div id="button-box">{buttons}</div>);