Add group widget

internal/assets/templates/group.html

@@ -0,0 +1,20 @@
+{{ template "widget-base.html" . }}
+
+{{ define "widget-content-classes" }}widget-content-frameless{{ end }}
+
+{{ define "widget-content" }}
+<div class="widget-group-header">
+    <div class="widget-header gap-20">
+        {{ range $i, $widget := .Widgets }}
+            <button class="widget-group-title{{ if eq $i 0 }} widget-group-title-current{{ end }}">{{ $widget.Title }}</button>
+        {{ end }}
+    </div>
+</div>
+
+<div class="widget-group-contents">
+{{ range $i, $widget := .Widgets }}
+    <div class="widget-group-content{{ if eq $i 0 }} widget-group-content-current{{ end }}">{{ .Render }}</div>
+{{ end }}
+</div>
+
+{{ end }}