Added cardSettingsPanel labs flag

no issue

- to be used for toggling UI experiments/exploration for cards with separate settings panels

ghost/admin/app/services/feature.js

@@ -57,6 +57,7 @@ export default Service.extend({
     oauthLogin: feature('oauthLogin', {developer: true}),
     customThemeSettings: feature('customThemeSettings'),
     membersActivity: feature('membersActivity', {developer: true}),
+    cardSettingsPanel: feature('cardSettingsPanel', {developer: true}),
 
     _user: null,
 

ghost/admin/app/templates/settings/labs.hbs

@@ -287,6 +287,19 @@
                         </div>
                     </div>
                 </div>
+                <div class="gh-expandable-block">
+                    <div class="gh-expandable-header">
+                        <div>
+                            <h4 class="gh-expandable-title">Editor - Card settings panel</h4>
+                            <p class="gh-expandable-description">
+                               New UI pattern for cards that have settings separate to their content.
+                            </p>
+                        </div>
+                        <div class="for-switch">
+                           <GhFeatureFlag @flag="cardSettingsPanel" />
+                        </div>
+                    </div>
+                </div>
             </div>
         </div>
         {{/if}}