add files

amp/featured-image.php

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+<?php
+/**
+ * Post featured image template part.
+ *
+ * 🚫🚫🚫
+ * DO NOT EDIT THIS FILE WHILE INSIDE THE PLUGIN! Changes You make will be lost when a new version
+ * of the AMP plugin is released. You need to copy this file out of the plugin and put it into your
+ * custom theme, for example. To learn about how to customize these Reader-mode AMP templates, please
+ * see: https://amp-wp.org/documentation/how-the-plugin-works/classic-templates/
+ * 🚫🚫🚫
+ *
+ * @package AMP
+ */
+
+$featured_image = $this->get( 'featured_image' );
+
+if ( empty( $featured_image ) ) {
+	return;
+}
+
+$amp_html = $featured_image['amp_html'];
+$caption  = $featured_image['caption'];
+?>
+<?php if ( show_thumbnail() ) : ?>
+<figure class="amp-wp-article-featured-image wp-caption">
+
+        <?php the_post_thumbnail("thumb-1200"); ?>
+
+	<?php //echo $amp_html; // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>
+
+</figure>
+<?php endif; ?>