adds headshot resource support

layouts/partials/image.html

@@ -0,0 +1,19 @@
+{{ $width := .width }}
+{{ $height := default $width .height }}
+{{ $class := .class }}
+{{ $resource := .resource }}
+{{ $alt := .alt }}
+
+{{ with $resource }}
+  {{ $image := .Fit (printf "%dx%d webp" (int $width) (int $height)) }}
+  {{ $fallback := .Fit (printf "%dx%d" (int $width) (int $height)) }}
+  <picture class="{{ $class }} block">
+    <source srcset="{{ $image.RelPermalink }}" type="image/webp">
+    <img 
+      src="{{ $fallback.RelPermalink }}" 
+      alt="{{ $alt }}"
+      width="{{ $width }}"
+      height="{{ $height }}"
+      loading="lazy">
+  </picture>
+{{ end }}