API C PvP.GetWeeklyChestInfo

Needs summary.
 rewardAchieved, lastWeekRewardAchieved, lastWeekRewardClaimed, pvpTierMaxFromWins = C_PvP.GetWeeklyChestInfo()
==Returns==
:;rewardAchieved:
:;lastWeekRewardAchieved:
:;lastWeekRewardClaimed:
:;pvpTierMaxFromWins:
==Patch changes==