feat: add option to disable image processing (#83)

* feat: add option to disable image processing

closes https://github.com/CaiJimmy/hugo-theme-stack/issues/37

* refactor(list): use article/components/header inside default.html

* refactor: use .Fill for cover image

layouts/partials/article-list/default.html

@@ -1,22 +1,4 @@
 {{ $image := partialCached "helper/image" (dict "Context" . "Type" "articleList") .RelPermalink "articleList" }}
 <article class="{{ if $image.exists }}has-image{{ end }}">
-    {{ if $image.exists }}
-        <div class="article-image">
-            <a href="{{ .RelPermalink }}">
-                {{ if $image.resource }}
-                    {{- $thumbnail := $image.resource.Fill "800x250" -}}
-                    {{- $thumbnailRetina := $image.resource.Fill "1600x500" -}}
-
-                    <img src="{{ $thumbnail.RelPermalink }}" 
-                        srcset="{{ $thumbnail.RelPermalink }} 800w, {{ $thumbnailRetina.RelPermalink }} 1600w"
-                        width="{{ $thumbnail.Width }}" height="{{ $thumbnail.Height }}" loading="lazy"
-                        alt="Featured image of post {{ .Title }}" />
-                {{ else }}
-                    <img src="{{ $image.permalink }}" loading="lazy" alt="Featured image of post {{ .Title }}" />
-                {{ end }}
-            </a>
-        </div>
-    {{ end }}
-
-    {{ partialCached "article/components/details" . .RelPermalink }}
+    {{ partial "article/components/header" . }}
 </article>