[skip prod] layouts: add back commento

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

layouts/_default/single.html

@@ -0,0 +1,55 @@
+{{ define "styles" }}
+    {{ $.Scratch.Set "style_opts" (dict "src" "scss/pages/post.scss" "dest" "css/post.css") }}
+{{ end }}
+
+{{ define "main" }}
+    {{ $dateFormat := .Site.Params.dateFormat | default "Jan 2 2006" }}
+
+    <div class="flex-wrapper">
+      <div class="post__container">
+        <div class="post">
+          <header class="post__header">
+            <h1 id="post__title">{{.Title}}</h1>
+            <time datetime="{{ .Date }}" class="post__date"
+            >{{ .Date.Format $dateFormat }}</time>
+          </header>
+          <article class="post__content">
+              {{ partial "anchored-headings.html" .Content }}
+              {{ if or .Params.math .Site.Params.math }}
+                  {{ partial "math.html" . }}
+              {{ end }}
+          </article>
+          {{ partial "tags.html" .}} {{ partial "post-pagination.html" .}}
+          {{ if and .Site.Params.CommentoURL (and (not .Site.BuildDrafts) (not .Site.IsServer)) -}}
+          <h2>Comments</h2>
+          {{ partialCached "commento.html" . }}
+          {{- end }}
+          <footer class="post__footer">
+            {{ partial "social-icons.html" .}}
+            <p>{{ replace .Site.Copyright "{year}" now.Year }}</p>
+          </footer>
+          </div>
+      </div>
+      {{ if .Params.toc }}
+      <div class="toc-container">
+          {{ if .Site.Params.showPageTitleInTOC }} <div class="toc-post-title">{{ .Title }}</div> {{ end }}
+        {{ .TableOfContents }}
+      </div>
+      {{ end }}
+    </div>
+    
+{{ end }} 
+
+{{ define "scripts" }}
+  {{/* Hardcode a specific prismjs version to avoid a redirect on every page load. */}}
+  <script src="https://unpkg.com/prismjs@1.20.0/components/prism-core.min.js"></script>
+
+  {{/* Automatically loads the needed languages to highlight the code blocks. */}}
+  <script src="https://unpkg.com/prismjs@1.20.0/plugins/autoloader/prism-autoloader.min.js"
+    data-autoloader-path="https://unpkg.com/prismjs@1.20.0/components/"></script>
+
+  {{ if .Params.toc }}
+    <script src="/js/table-of-contents.js"></script>
+  {{ end }}
+
+{{ end }}

layouts/partials/commento.html

@@ -0,0 +1,3 @@
+<div id="commento"></div>
+<script defer src="{{ .Site.Params.CommentoURL }}/js/commento.js"></script>
+<noscript>Please enable JavaScript to load the comments.</noscript>