add new endpoint for clips, add nullable annotation for clips - #433

Missing XML comment for publicly visible type or member 'IRateLimiter.Perform(Action)'

Missing XML comment for publicly visible type or member 'IRateLimiter.Perform(Action, CancellationToken)'

Missing XML comment for publicly visible type or member 'IRateLimiter.Perform<T>(Func<Task<T>>, CancellationToken)'

Missing XML comment for publicly visible type or member 'IRateLimiter.Perform<T>(Func<Task<T>>)'

Missing XML comment for publicly visible type or member 'IRateLimiter.Perform(Func<Task>)'

Missing XML comment for publicly visible type or member 'IRateLimiter.Perform(Func<Task>, CancellationToken)'

Missing XML comment for publicly visible type or member 'IHttpCallHandler.RequestReturnResponseCodeAsync(string, string, List<KeyValuePair<string, string>>?)'

Missing XML comment for publicly visible type or member 'IHttpCallHandler.PutBytesAsync(string, byte[])'

Missing XML comment for publicly visible type or member 'IHttpCallHandler.GeneralRequestAsync(string, string, string?, ApiVersion, string?, string?)'