feat: basic latex support

layouts/partials/head.html

@@ -19,6 +19,7 @@
 
     {{ $darkMode := resources.Get "js/darkmode.js" |  resources.Fingerprint "md5" | resources.Minify }}
     <script src="{{$darkMode.Permalink}}"></script>
+    {{partial "katex.html" .}}
 
     <!--  Preload page vars  -->
     {{$linkIndex := resources.Get "indices/linkIndex.json" | resources.Fingerprint "md5" | resources.Minify |  }}