Sample Hardhat Project

Owner actions.

• Can update rewards duration. (setRewardsDuration)
• Recover non-staked ERC20 tokens. (recoverERC20)

Reward distibutor

• Can start the reward epoch with a specified amount and set the reward-rate per second based on if there is a currently active rewards on-going or not. If there is no active on-ongoing reward then the reward starts with the specified amount and the reward rate is set as reward amount / reward duration. If there is an active reward epoch going-on then the remaining rewards are taken and added to the new epoch. (notifyRewardAmount)