Social-icons: Add Polywork icon. (#545)

* Social-icons: Add Polywork icon.

fixes #487

Thanks to https://icon-sets.iconify.design/simple-icons/polywork/ and Simple Icons Collaborators (where the SVG came from)

* minor updates to svg

Co-authored-by: Aditya Telange <[email protected]>

Author: ericapisani

layouts/partials/svg.html

@@ -313,6 +313,12 @@
         d="M7.144 19.532l1.049-5.751c.11-.606.691-1.002 1.304-.948 2.155.192 6.877.1 8.818-4.002 2.554-5.397-.59-7.769-6.295-7.769H7.43a1.97 1.97 0 0 0-1.944 1.655L2.77 19.507a.857.857 0 0 0 .846.994h2.368a1.18 1.18 0 0 0 1.161-.969zM7.967 22.522a.74.74 0 0 0 .666.416h2.313c.492 0 .923-.351 1.003-.837l.759-4.601c.095-.523.597-.866 1.127-.819 1.86.166 5.567-.118 6.85-3.821.554-1.6.705-2.954.408-4.018"
         style="font-variation-settings:normal" stroke="currentColor" stroke-linejoin="miter" />
 </svg>
+{{- else if (eq $icon_name "polywork") -}}
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img"
+    fill="currentColor" preserveAspectRatio="xMidYMid meet" viewBox="0 0 24 24">
+    <path
+        d="M19.125 0H4.875A4.865 4.865 0 0 0 0 4.875v14.25C0 21.825 2.175 24 4.875 24h6.6c2.7 0 4.875-2.175 4.875-4.875V16.65h2.775c2.7 0 4.875-2.175 4.875-4.875v-6.9C24 2.175 21.825 0 19.125 0zM16.5 1.275h2.625a3.6 3.6 0 0 1 3.6 3.6v2.7H16.5v-6.3zM15.075 9v6.45H8.85V9h6.225zM8.85 1.2h6.225v6.375H8.85V1.2zM1.275 4.8a3.6 3.6 0 0 1 3.6-3.6H7.5v6.375H1.275V4.8zM7.5 9v6.45H1.2V9h6.3zm0 13.725H4.8a3.6 3.6 0 0 1-3.6-3.6V16.8h6.3v5.925zm7.575-3.525a3.6 3.6 0 0 1-3.6 3.6H8.85v-5.925h6.225V19.2zm7.65-7.35a3.6 3.6 0 0 1-3.6 3.6H16.5V9h6.225v2.85z" />
+</svg>
 {{- else if (eq $icon_name "qq") -}}
 <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"
     stroke-linecap="round" stroke-linejoin="round">