[CHANGE] Remove anon accounts && added simple caching for urls

Manager.App/Services/LibraryService.cs

@@ -168,7 +168,7 @@ public class LibraryService : ILibraryService
         }
     }
 
-    public async Task<ListResult<ChannelEntity>> GetChannelAccountsAsync(int total = 20, int offset = 0, CancellationToken cancellationToken = default)
+    public async Task<ListResult<ChannelEntity>> GetChannelsAsync(int total = 20, int offset = 0, CancellationToken cancellationToken = default)
     {
         try
         {