feat(forum): add complete forum workflows

templates/pages/page-forums.php

@@ -0,0 +1,12 @@
+<?php
+/**
+ * Template Name: Jio - 论坛首页
+ * Template Post Type: page
+ */
+defined('ABSPATH') || exit;
+if (!\Jio\Forum\Core::enabled()) {
+	status_header(404);
+	include get_404_template();
+	return;
+}
+\Jio\Forum\View::home();