Add notice about subscriptions to wizard admin panel

assets/javascripts/discourse/templates/admin-wizards.hbs

@@ -7,6 +7,13 @@
   {{/if}}
   {{nav-item route="adminWizardsLogs" label="admin.wizard.log.nav_label"}}
   {{nav-item route="adminWizardsManager" label="admin.wizard.manager.nav_label"}}
+
+  <div class="announcement">
+    <a href="https://custom-wizard.pavilion.tech/subscriptions" target="_blank" title="Click to learn more about Custom Wizard Subscriptions">
+      <img src='/images/emoji/twitter/man_mage.png?v=12'>
+      <span>Custom Wizard Subscriptions Are Coming!</span>
+    </a>
+  </div>
 {{/admin-nav}}
 
 <div class="admin-container">

assets/stylesheets/common/wizard-admin.scss

@@ -3,6 +3,24 @@
 @import "wizard-api";
 @import "common/components/buttons";
 
+.announcement {
+  margin-left: auto;
+
+  a {
+    display: flex;
+    color: #fff;
+    background-color: #3c1c8d;
+    padding: 6px 12px;
+    text-decoration: none;
+
+    img {
+      width: 20px;
+      height: 20px;
+      margin-right: 0.5rem;
+    }
+  }
+}
+
 .admin-wizard-controls {
   display: flex;
   align-items: center;