添加一种新的 frontmatter 格式 (#466)

assets/js/settings.js

@@ -1,6 +1,7 @@
----
+/* @frontmatter
 layout: null
----
+*/
+
 (function () {
   const PREFIX = "HMCL_DOCS_SETTINGS_", data = {}, bus = new EventTarget(), configs = /*{%comment%}*/{}/*{%endcomment%}*/ /**{{'/'}}{{ site.data.settings | jsonify }}/**/;
   window.addEventListener("storage", ({ key, newValue }) => key !== null && key.startsWith(PREFIX) && newValue !== data[key] && bus.dispatchEvent(new CustomEvent(key, { detail: (data[key] = newValue) })));

assets/js/theme.js

@@ -1,6 +1,7 @@
----
+/* @frontmatter
 layout: null
----
+*/
+
 window.addEventListener("DOMContentLoaded", function () {
   var skinLink = document.getElementById("skin");
   var darkModeQuery = window.matchMedia("(prefers-color-scheme: dark)");