add giscus

Author: nemanjam

src/pages/blog/[slug].astro

@@ -50,3 +50,21 @@ const ogImageAbsoluteUrl =
   />
   <Renderer content={content} slot="content" />
 </ContentLayout>
+
+ <!-- Comments -->
+  <div class="giscus"></div>
+  <script src="https://giscus.app/client.js"
+          data-repo="nemanjam/nemanjam.github.io"
+          data-repo-id="R_kgDOKc-LeA"
+          data-category="General"
+          data-category-id="DIC_kwDOKc-LeM4CZ7UL"
+          data-mapping="pathname"
+          data-strict="0"
+          data-reactions-enabled="1"
+          data-emit-metadata="0"
+          data-input-position="bottom"
+          data-theme="preferred_color_scheme"
+          data-lang="en"
+          crossorigin="anonymous"
+          async>
+</script>