Hi @tamilvanan
You can listen event 'bagisto.shop.home.content.before' to your package's service provider to add your page for light box.
\Event::listen('bagisto.shop.home.content.before', function($viewRenderEventManager) {
$viewRenderEventManager->addTemplate('type-hint::folder1.folder2.file-name');
});
Write your light box code in this file according to your need.
Thanks