chore: more featured tab additions

Author: ChanGu3

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeChannelExtractor.java

@@ -451,6 +451,9 @@ private List<ListLinkHandler> getTabsForNonAgeRestrictedChannels() throws Parsin
                             case "playlists":
                                 addNonVideosTab.accept(ChannelTabs.PLAYLISTS);
                                 break;
+                            case "featured":
+                                addNonVideosTab.accept(ChannelTabs.FEATURED);
+                                break;
                             default:
                                 // Unsupported channel tab, ignore it
                                 break;

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/linkHandler/YoutubeChannelTabLinkHandlerFactory.java

@@ -33,6 +33,8 @@ public static String getUrlSuffix(@Nonnull final String tab)
                 return "/releases";
             case ChannelTabs.PLAYLISTS:
                 return "/playlists";
+            case ChannelTabs.FEATURED:
+                return "/featured";
             default:
                 throw new UnsupportedTabException(tab);
         }
@@ -68,7 +70,8 @@ public String[] getAvailableContentFilter() {
                 ChannelTabs.SHORTS,
                 ChannelTabs.LIVESTREAMS,
                 ChannelTabs.ALBUMS,
-                ChannelTabs.PLAYLISTS
+                ChannelTabs.PLAYLISTS,
+                ChannelTabs.FEATURED
         };
     }
 }