refactor FSE header templates

balasana/template-parts/header/fse-header.php

@@ -0,0 +1,6 @@
+<header id="masthead" class="site-header responsive-max-width">
+	<?php
+		$template = new A8C\FSE\WP_Template();
+		$template->output_template_content( A8C\FSE\WP_Template::HEADER );
+	?>
+</header>

dalston/template-parts/header/fse-header.php

@@ -0,0 +1,6 @@
+<header id="masthead" class="site-header site-branding entry-content">
+	<?php
+		$template = new A8C\FSE\WP_Template();
+		$template->output_template_content( A8C\FSE\WP_Template::HEADER );
+	?>
+</header>

varia/template-parts/header/fse-header.php

@@ -0,0 +1,6 @@
+<header id="masthead" class="fse-template-part fse-header entry-content">
+	<?php
+		$template = new A8C\FSE\WP_Template();
+		$template->output_template_content( A8C\FSE\WP_Template::HEADER );
+	?>
+</header>