FEATURE: Featured topic for user profile & card (#8461)

lib/guardian/user_guardian.rb

@@ -123,4 +123,11 @@ module UserGuardian
         end
       end
   end
+
+  def can_feature_topic?(user, topic)
+    return false if !SiteSetting.allow_featured_topic_on_user_profiles?
+    return false if !is_me?(user) && !is_staff?
+    return false if topic.read_restricted_category? || topic.private_message?
+    topic.user_id === user.id
+  end
 end

lib/post_destroyer.rb

@@ -77,6 +77,7 @@ class PostDestroyer
     WebHook.enqueue_post_hooks(:post_destroyed, @post, payload)
 
     if is_first_post
+      UserProfile.remove_featured_topic_from_all_profiles(@topic)
       UserActionManager.topic_destroyed(topic)
       DiscourseEvent.trigger(:topic_destroyed, topic, @user)
       WebHook.enqueue_topic_hooks(:topic_destroyed, topic, topic_payload)

lib/svg_sprite/svg_sprite.rb

@@ -125,6 +125,7 @@ module SvgSprite
     "heading",
     "heart",
     "home",
+    "id-card",
     "info-circle",
     "italic",
     "key",