feat(image): add image lightgallery

layouts/partials/plugin/icon.html

@@ -1,6 +1,6 @@
 {{- $type := index . "type" | default "fa" -}}
 {{- $classList := split (index . "class") " " -}}
-{{- $scratch := index . "scratch" -}}
+{{- $context := index . "context" -}}
 {{- /* Fork Awesome */ -}}
 {{- if eq $type "fo" -}}
     {{- $newClassList := slice -}}
@@ -12,11 +12,13 @@
         {{- end -}}
     {{- end -}}
     {{- $classList = $newClassList -}}
+    {{- $scratch := $context.Scratch.Get "scratch" -}}
     {{- $scratch.Set "forkawesome" true -}}
 
 {{- /* default is Font Awesome */ -}}
 {{- /* Others */ -}}
 {{- else if ne $type "fa" -}}
+    {{- $scratch := $context.Scratch.Get "scratch" -}}
     {{- $scratch.Set "iconfont" true -}}
 {{- end -}}
 <i class="{{ delimit $classList ` ` }}"></i>