another add new button so users know they have to add

Author: contactashish13

classes/Visualizer/Render/Library.php

@@ -137,7 +137,7 @@ private function _renderLibrary() {
 			echo '<div id="visualizer-library" class="visualizer-clearfix">';
 			echo '<div class="visualizer-chart">';
 			echo '<div class="visualizer-chart-canvas visualizer-nochart-canvas">';
-			echo '<div class="visualizer-notfound">', esc_html__( 'No charts found', 'visualizer' ), '</div>';
+			echo '<div class="visualizer-notfound">', esc_html__( 'No charts found', 'visualizer' ), '<p><h2><a href="javascript:;" class="add-new-h2">', esc_html__( 'Add New', 'visualizer' ), '</a></h2></p></div>';
 			echo '</div>';
 			echo '<div class="visualizer-chart-footer visualizer-clearfix">';
 			echo '<span class="visualizer-chart-action visualizer-nochart-delete"></span>';