feat: add comment system

Author: abmfy

theme/partials/comments.html

@@ -0,0 +1,48 @@
+
+<h2 id="__comments">{{ lang.t("meta.comments") }}</h2>
+<!-- Insert generated snippet here -->
+<script src="https://giscus.app/client.js"
+        data-repo="SAST-skill-docers/sast-skill-docs"
+        data-repo-id="R_kgDOGHh6LQ"
+        data-category="[在此输入分类名]"
+        data-category-id="[在此输入分类 ID]"
+        data-mapping="pathname"
+        data-strict="0"
+        data-reactions-enabled="1"
+        data-emit-metadata="0"
+        data-input-position="top"
+        data-theme="preferred_color_scheme"
+        data-lang="zh-CN"
+        crossorigin="anonymous"
+        async>
+</script>
+
+<!-- Synchronize Giscus theme with palette -->
+<script>
+  var giscus = document.querySelector("script[src*=giscus]")
+
+  /* Set palette on initial load */
+  var palette = __md_get("__palette")
+  if (palette && typeof palette.color === "object") {
+    var theme = palette.color.scheme === "slate" ? "dark" : "light"
+    giscus.setAttribute("data-theme", theme) 
+  }
+
+  /* Register event handlers after documented loaded */
+  document.addEventListener("DOMContentLoaded", function() {
+    var ref = document.querySelector("[data-md-component=palette]")
+    ref.addEventListener("change", function() {
+      var palette = __md_get("__palette")
+      if (palette && typeof palette.color === "object") {
+        var theme = palette.color.scheme === "slate" ? "dark" : "light"
+
+        /* Instruct Giscus to change theme */
+        var frame = document.querySelector(".giscus-frame")
+        frame.contentWindow.postMessage(
+          { giscus: { setConfig: { theme } } },
+          "https://giscus.app"
+        )
+      }
+    })
+  })
+</script>