feat(styleguide): add signal-green-red notification variant

patterns/notifications.html

@@ -142,6 +142,27 @@
         </div>
       </article>
 
+      <p class="sg-preview-label">Pattern: Notification with title - green-red rating</p>
+      <article class="sg-card sg-card--notification-signal-green-red sg-notifications-pattern__card" data-pattern="notification-with-title" data-pattern-variant="green-red-rating" data-component="notification-card">
+        <div class="sg-card-segment sg-card-segment--header sg-card-segment--signal-green-red sg-notifications-pattern__text-segment sg-notifications-pattern__title-segment" data-component-part="card-header">
+          <p class="sg-body">
+            <span class="sg-strong">Bewertung</span>
+          </p>
+        </div>
+
+        <div class="sg-card-segment sg-card-segment--header sg-card-segment--signal-green-red sg-notifications-pattern__text-segment" data-component-part="card-header">
+          <p class="sg-body">
+            Positive oder negative Bewertungsdarstellung zur Illustration.
+          </p>
+        </div>
+
+        <div class="sg-card-segment sg-card-segment--body sg-card-segment--signal-green-red" data-component-part="card-body">
+          <button class="sg-interaction-element sg-button sg-button--active" type="button" data-component="button" data-component-state="active">
+            zur Bewertung
+          </button>
+        </div>
+      </article>
+
       <p class="sg-preview-label">Pattern: Notification with title - yellow</p>
       <article class="sg-card sg-notifications-pattern__card" data-pattern="notification-with-title" data-pattern-variant="yellow" data-component="notification-card">
         <div class="sg-card-segment sg-card-segment--header sg-card-segment--signal-yellow sg-notifications-pattern__text-segment sg-notifications-pattern__title-segment" data-component-part="card-header">