CurrentRewards queries the current rewards structure for costaking single pool.

Rewards is the current rewards for the single pool of rewards for all the costakers for the whole chain. If some action happens of satoshi or baby staked or is unbonded or withdraw of the rewards available, this current period is sent to an HistoricalRewards and a new period is created and the rewards property is zerod out. Note: This rewards have increased simulated decimals (10^20) to increase precision when calculating the rewards per score and protect against math overflow issues. The decimals are removed prior to sending out to the incentives gauge.