Add top and top_in helper methods

Add `top(number)` method as a shorthand of `members_from_rank_range(1,number)

Add `top_in(leaderboard_name, number)` method as a shorthan of `members_from_rank_range_in(leaderboard_name, 1, number)`

Testing top methods for rever leadearboard type

Testing Againts to Tie Ranking Leaderboard

Testing Competition Ranking Leaderboard