feat: add svg author image support (#214)

Co-authored-by: Dor Munis <[email protected]>

layouts/partials/bio.html

@@ -3,10 +3,16 @@
 {{ $image := resources.Get $avatar_img }}
 <div class="author">
     {{ with $image }}
+    {{ if eq .MediaType.SubType "svg" }}
+    <svg width="25em" height="25em" xmlns="http://www.w3.org/2000/svg">
+        <image width="25em" height="25em" href="{{ $image.RelPermalink }}" />
+    </svg>
+    {{ else }}
     {{ $image := $image.Fill "100x100 webp" }}
     <img class="author-avatar" src="{{ $image.RelPermalink }}" alt="{{ $avatar_img_alt }}" width="{{ .Width }}"
         height="{{ .Height }}" />
     {{ end }}
+    {{ end }}
     <h2 class="author-name">{{ .Site.Params.author.intro }}</h2>
     <p class="author-bio">{{ .Site.Params.author.description }}</p>
 </div>