feat: add image processing, improvements

themes/hugo-sustain/layouts/partials/blog/headerimage.html

@@ -1,15 +1,21 @@
 {{- $page := . -}}
+{{- $image := "" }}
 {{- with $page.Params.headerimage }}
   <div class="header-image">
     {{- if eq $page.BundleType "leaf" }}
       {{- with $page.Resources.GetMatch .src }}
-        <img src="{{ .RelPermalink }}" />
+        {{- $image = . }}
       {{- end }}
     {{- else }}
       {{- with resources.GetMatch (printf "**/%s" .src) }}
-        <img src="{{ .RelPermalink }}" />
+        {{- $image = . }}
       {{- end }}
     {{- end }}
+    {{- $processes := .processes | default (slice "fill 1000x440 webp" )}}
+    {{- $image = partial "image-processing" (dict "image" $image "processes" $processes "filter" .filter) -}}
+    {{- with $image }}
+      <img src="{{ .RelPermalink }}" />
+    {{- end }}
     {{- with .text }}<p>{{ . | markdownify }}</p>{{ end }}
   </div>
 {{- end }}