gift-card-template.php

<?php
add_action( 'woocommerce_single_product_summary', 'gift_card_template', 60 );

function gift_card_template () {

	global $product;
	if ( 'gift_card' == $product->get_type() ) {

		$template_path = plugin_dir_path( __FILE__ ) . 'templates/';
		// Load the template
		wc_get_template( 'single-product/add-to-cart/gift_card.php',
			'',
			'',
			trailingslashit( $template_path ) );
	}
}