Add icons for Helios, Redmine, Zulip, Forum, Mastodon

source/_patterns/00-atoms/02-icons/icons.mustache

@@ -980,6 +980,42 @@
   </div>
 </div>
 
+<div class="card">
+  <div class="flex justify-center items-center h-16 text-2xl border-b border-grey-100 bg-grey-50 p-2">
+    <i class="ico--forum"></i>
+  </div>
+  <div class="card__body p-2 text-2xs">
+    <code>.ico--forum</code>
+  </div>
+</div>
+
+<div class="card">
+  <div class="flex justify-center items-center h-16 text-2xl border-b border-grey-100 bg-grey-50 p-2">
+    <i class="ico--helios"></i>
+  </div>
+  <div class="card__body p-2 text-2xs">
+    <code>.ico--helios</code>
+  </div>
+</div>
+
+<div class="card">
+  <div class="flex justify-center items-center h-16 text-2xl border-b border-grey-100 bg-grey-50 p-2">
+    <i class="ico--redmine"></i>
+  </div>
+  <div class="card__body p-2 text-2xs">
+    <code>.ico--redmine</code>
+  </div>
+</div>
+
+<div class="card">
+  <div class="flex justify-center items-center h-16 text-2xl border-b border-grey-100 bg-grey-50 p-2">
+    <i class="ico--zulip"></i>
+  </div>
+  <div class="card__body p-2 text-2xs">
+    <code>.ico--zulip</code>
+  </div>
+</div>
+
 <div class="card">
   <div class="flex justify-center items-center h-16 text-2xl border-b border-grey-100 bg-grey-50 p-2">
     <i class="ico--open-source"></i>