Add appearance tools to all Varia themes (#6428)

varia/functions.php

@@ -50,6 +50,9 @@ if ( ! function_exists( 'varia_setup' ) ) :
 		// Add default posts and comments RSS feed links to head.
 		add_theme_support( 'automatic-feed-links' );
 
+		// Enable appearance tools for Block Editor.
+		add_theme_support( 'appearance-tools' );
+
 		/*
 		 * Let WordPress manage the document title.
 		 * By adding theme support, we declare that this theme does not use a